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全部话题 - 话题: goalkeeper
1 2 3 4 5 6 下页 末页 (共6页)
n**y
发帖数: 860
1
来自主题: gardening版 - 哥尔其 Goalkeeper
http://www.chinaturf.com/homepage/pz-goalkeeper.htm
* 一流品种
* 色泽浓绿、亮泽
* 抗病性强
* 适应性广
* 拥有植物内生菌
品种特性
色泽浓绿,外形美观:Goalkeeper质地细腻,密度高,并且拥有浓绿
、亮丽的色泽。
强抗逆性特征:Goalkeeper抗逆性表现,几乎超过了目前所有的多年
生黑麦草品种。近期高温、高湿条件的品比试验中,因其浓绿的色泽
和抗逆性表现,Goalkeeper几乎击败了所有参赛对手。其它品种则由
于缺乏适应力,纷纷枯黄死亡。
拥有高抗病力的植物内生菌:Goalkeeper的繁殖种子植物内生菌感染
率高达90%以上,由此极大地增强了对许多食草性昆虫的抵抗力。
坪用性优异
在佛罗里达州立大学高尔夫球场的球道和果岭区品比试验中,Goalke
eper的色泽分居最优秀的品种之列;而总体坪用性得分则列亚里桑那
大学试验区的第一名。
适用范围
* 混合、掺和使用
* 各类运动场草坪
* 庭院草坪
* 公路护坡
* 城镇绿化
* 景观维护
育种说明
在保持种子高产的情况下,提高坪用特性,增强抗病虫害能力是杰克
y*j
发帖数: 200
2
Goalkeeper gets sent off, defender makes two saves (and scores himself) in
Champions League qualifying shootout
http://sports.yahoo.com/blogs/soccer-dirty-tackle/goalkeeper-ge
e****r
发帖数: 581
3
来自主题: Soccer版 - The goalkeeper
The goalkeeper stares at the ball as if it has nothing to do with him.
k*********e
发帖数: 2039
4
下面说说门将这个位置的特殊性,以及他在裁判那享受的额外的“保护”。
门将跟普通的防守球员不同。第一是因为他可以展开身体去封堵,第二是因为他跟别的
防守队员的目的不一样。一个后卫,可以选择解围,可以选择断球,可以选择卡位。但
是一个门将出击,就一个目的,破坏这次进攻。所以这就带来一个问题,门将的危险性
是这个位置本身赋予的。 the position of goalkeeper is inherently dangerous
and the goalkeeper is allowed a bit more leeway than other players。一个霸气
的门将,会让对方的前锋害怕或者在射门的时候失去自信,门将是需要有威慑力的。另
外在高空球的时候,因为门将的身体舒展,没有用双臂来保护肋下的动作,门将也更脆
弱,更容易受伤,所以才有提膝盖防止冲撞的动作,一般也是自我保护,当然不排除险
恶的小人故意利用这个优势去伤的,这个只能说是极少。在地面单刀球的时候,因为也
是舒展身体封堵,把胸,腹,头暴露在前锋的脚跟膝盖下,也是很危险的。
在禁区内或者小禁区内FIFA并没有用明确的字眼要... 阅读全帖
t****n
发帖数: 167
5
California Athletes participating in the 2012 Olympics
Posted on July 27, 2012 at 6:02 AM
Updated Friday, Jul 27 at 6:30 AM
Here is a list of California Athletes participating in the 2012 Olympics:
----------------------------------
Kyle Alcorn, Clovis, Calif., 3,000m Steeplechase
Samuel Mikulak, Newport Beach, Calif., Gymnastics, Artistic
Tumua Anae, Newport Beach, Calif., Water Polo, Goalkeeper
Alyssa Anderson, Granite Bay, Calif., Swimming, 800m free relay
Haley Anderson, Granite Bay, Calif.,... 阅读全帖
k*********e
发帖数: 2039
6
这正是我要说的第二点
2. 门将没有球权。Goalkeeper with the control of the ball
这个是最容易引起争议的。核心的出发点,就是在禁区内,球门区内,作为裁判,对门
将跟对普通球员的要求不一样。就是我上面说的 the goalkeeper is allowed a bit
more leeway than other players。
我们主要是说五五开的拼抢。毕竟如果不是五五开,门将慢了,那还是犯规,点球无疑。
矛盾主要是集中在高球,大家都五五开,可能大家都同时碰到了球,凭什么吹冲撞门将
(未必全吹,但是概率非常高,75%以上的都会吹犯规)。这就是裁判从对门将保护说
起了。处于安全的目的,五五开的高球,门将更容易受伤。裁判会默认前锋干扰的成分
偏大,影响了门将的接球。所以除非很明显的前锋有机会触球在先,不然那种乱战你我
都没碰好的,最后球掉下来被别的前锋渔翁得利的时候,裁判都会吹干扰门将的。
至于球门区的作用,FIFA明文列的3条就是有关开球跟间接任意球的,但是小禁区对于
裁判处理goalkeeper without control of the b... 阅读全帖
t******g
发帖数: 10390
7
算.
http://en.wikipedia.org/wiki/Penalty_shoot-out_(association_foo
"A kick is successful if, having been touched once by the kicker, the ball
crosses the goal line between the goal posts and under the crossbar, without
touching any player, official, or outside agent other than the defending
goalkeeper. The ball may touch the goalkeeper, goal posts, or crossbar any
number of times before going into the goal as long as the referee believes
the ball's motion is the result of the initial kick. "
里面特... 阅读全帖
a*******i
发帖数: 11664
8
来自主题: _FantaSoccer版 - 官网犯大西
not much better
Playing 1-30 minutes 1
Playing 31-60 minutes 2
Playing 61+ minutes 3
Goal 5
For each goal assist 3
Goalkeeper clean sheet * 6
Defender clean sheet * 4
Midfielder clean sheet * 1
For every 2 saves - Goalkeeper 1
For every save - Outfield player 1
For every penalty save 5
For every penalty miss -2
Foul causing a penalty -1
For every 2 goals conceded by your goalkeeper or defenders -1
Own goal -2
Yellow card -1
Red card (inclu
b*********3
发帖数: 1709
9
Goalkeeper intentionally ruins field, causes opponent to miss penalty shot
http://www.sbnation.com/lookit/2015/12/6/9857034/goalkeeper-rui
http://imgur.com/gallery/NuQZ4SG
P*****t
发帖数: 4978
10
来自主题: Olympics版 - 加拿大也挺悲催的
被人黑了,whine了一下,反倒要被fifa惩罚。这世道真是...
FIFA may discipline Canadian players, coach over ref remarks
The governing body of soccer is considering disciplinary action over
blistering comments made by Canada's coach and players following a loss to
the United States in the semifinals of the Olympic women's soccer tournament.
FIFA says it will analyze the remarks by the Canadians, who were upset with
the referee over a call rarely seen. Goalkeeper Erin McLeod was whistled for
holding the ball too long, sta... 阅读全帖
I*****y
发帖数: 854
11
来自主题: WorldNews版 - 移动球门的守门员,真牛 (转载)
【 以下文字转载自 Soccer 讨论区 】
发信人: Inquiry (We will defeat SARS), 信区: Soccer
标 题: 移动球门的守门员,真牛
发信站: BBS 未名空间站 (Sat Oct 3 10:10:48 2009, 美东)
http://www.timesonline.co.uk/tol/sport/football/article6848776.ece
Cheating goalkeeper Kim Christensen faces fine after moving goalposts
A goalkeeper in Sweden’s top football league may be suspended and perhaps
fined after being caught moving the goalposts. Literally.
Kim Christensen, a Dane who plies his trade with IFK Gothenburg, was seen on
camera kicking in bo
B*****e
发帖数: 9375
12

这不是大陆香港的用词区别吧
"波霸" "波涛汹涌" 是形容什么 大陆香港都有一致看法
"没钱还说个球!" 这个球 是指什么 也很明白吧
(还是说 后者该叫"蛋") ?
呵呵 不过现在实行世界大同 语言变化很快
当年我刚来美国的时候 还有人教过我
足球里的门将 叫"goalie, goalkeeper", but not "goaltender"
冰球里的门将 叫"goalie, goaltender", but not "goalkeeper"
现在好像也混着说了
t***o
发帖数: 19256
13
来自主题: Soccer版 - 杯具呀,俺要去葡萄牙了
Sporting CP Set Sights On Inter Goalkeeper Francesco Toldo - Report
The veteran custodian might not hang up his gloves just yet...
Sporting CP are reportedly ready to offer Inter goalkeeper Francesco Toldo
a one-year contract.
The 38-year-old has found himself on the fringes of the action in the last
couple of seasons as the back-up to Brazilian Julio Cesar.
With Inter reportedly keen on signing Luca Castellazzi of Sampdoria to
prove adequate cover for Cesar, Toldo has been linked with a directo
x***k
发帖数: 20754
14
adidas World Cup 2010 Official Match Soccer Ball

93 of 104 people found the following review helpful:
1.0 out of 5 stars WORST BALL EVER, June 21, 2010
By Robert Green "Goalkeeper Extraordinaire" (England) - See all my reviews
This review is from: adidas World Cup 2010 Official Match Soccer Ball (
Sports)
This ball is a complete disgrace. I am like the third best goalkeeper in
England and I can't even stop this thing. A buddy of mine kicked a slow
roller to me and I completely muffed it in
a*******a
发帖数: 1336
15
来自主题: Soccer版 - amazon上对用球的评论
http://www.amazon.com/adidas-World-Official-Match-Soccer/product-reviews/B002N4FT16/ref=dp_top_cm_cr_acr_txt?ie=UTF8&showViewpoints=1
94 of 105 people found the following review helpful:
1.0 out of 5 stars WORST BALL EVER, June 21, 2010
By Robert Green "Goalkeeper Extraordinaire" (England) - See all my reviews
This review is from: adidas World Cup 2010 Official Match Soccer Ball (
Sports)
This ball is a complete disgrace. I am like the third best goalkeeper in
England and I can't even stop this
e****y
发帖数: 482
16
来自主题: Soccer版 - 皇马周末对阵瓦伦大名单
REAL MADRID SQUAD LIST:
Goalkeepers: Casillas, Adan, Dudek
Defenders: Albiol, Garay, Pepe, Carvalho, Marcelo, Nacho Fernandez
Midfielders: Lass, Ozil, Xabi Alonso, Kaka, Pedro Leon, Canales, Granero,
Juanfran
Forwards: Cristiano Ronaldo, Benzema, Higuain
VALENCIA SQUAD LIST:
Goalkeepers: Cesar, Guaita
Defenders: Miguel, Dealbert, Ricardo Costa, Stankevicius, Mathieu, Jordi
Alba
Midfielders: Albelda, Maduro, Topal, Banega, Joaquin, Pablo Hernandez,
Mata
Forwards: Soldado, Jonas, Aduriz
阿贝洛亚禁赛,教练决... 阅读全帖
s******n
发帖数: 2279
17
U.S. has bigger problems
Mexico's team, not its fan base, more of a concern
By JOSE DE JESÚS ORTIZ
Copyright 2011 Houston Chronicle
It's been a long time since the U.S. Soccer Federation's men's and boys'
sides seemed in such disarray. The senior national team was embarrassed at
the Rose Bowl on June 25, blowing a two-goal lead in an eventual 4-2 blowout
loss to Mexico in the Gold Cup final.
Outclassed on the field, U.S. goalkeeper Tim Howard then showed a lack of
class off the field in a... 阅读全帖
M**u
发帖数: 10158
18
标题没注明是男队女队,估计是男的吧。。。
U.S. Under-19 Women Defeat Holland, 2-0
CARSON, Calif. -UCLA's Stacy Lindstrom and Bristyn Davis helped the U.S.
Under-19 Women's National Team defeated the Netherlands, 2-0, in its first
match of the 2004 Philips Lighting U-19 Women's Soccer Invitational at the
Home Depot Center Tuesday. The USA got a goal in the 3rd minute from Kerri
Hanks then added a clincher in the 79th, to record the win over a tough and
organized Dutch side.
The USA got on the scoreboard just 155 seco... 阅读全帖
s******n
发帖数: 2279
19
来自主题: Soccer版 - 说到战术
不喜欢溜猴就是球盲
基本成立,很少看到职业球队训练不练溜猴的,基本的压迫下的传接球基本功,大多数
球队被巴萨反抢压迫下控球率三成的和控球率接近五成的水平差距还是很明显的
Piggy in the Middle
Piggy in the middle, or 5 v 2 is the classic possession game used by all of
the top clubs in the world. In the photo above, Chelsea players play piggy
in the middle before a training session. Who's one of the piggys in the
middle in the photo? Well, that looks like John Terry to me. Wonder how long
he had to spend in the middle chasing the ball around.
Field size: 30 yards by 20 (adjust accor... 阅读全帖
C**T
发帖数: 5379
20
嗯,官方规则说的很明白
Interfering with an opponent” means:
Preventing an opponent from playing or being able to
play the ball. For example, by clearly obstructing the
goalkeeper’s line of vision or movement.
不过裁判如果认为他没有clearly obstructing the goalkeeper's line of vision or
movement,纯粹是为了躲球,没有故意干扰卡西视线,不判也没办法。
s***s
发帖数: 4329
21
来自主题: Soccer版 - 欧洲杯饭大喜已经有了
贴一下
比较雷人
T P P F RP TP NF
Čech Goalkeeper 0.0 0 0 RUS 08/06
Abate Defender 0.0 0 0 ESP 10/06
K. Papadopoulos Defender 0.0 0 0 POL 08/06
Piqué Defender 0.0 0 0 ITA 10/06
M. Kadlec Defender 0.0 0 0 RUS 08/06
Dzagoev Midfielder 0.0 0 0 CZE 08/06
Busquets Midfielder 0.0 0 0 ITA 10/06
Christodoulopoulos Midfielder 0.0 0 0 POL 08/06
Błaszczykowski Mid... 阅读全帖
p**********d
发帖数: 7918
22
来自主题: Soccer版 - 德國公佈名單:卡考落選
http://www.bbc.co.uk/sport/0/football/18245348?print=true
Euro 2012: Striker Cacau left out of Germany squad
Germany coach Joachim Low has left Brazilian-born forward Cacau out of his 23-man squad for Euro 2012.
Loew has opted to take only three strikers - Mario Gomez, Miroslav Klose and Lukas Podolski - to Poland and Ukraine, meaning Stuttgart's Cacau, 31,
misses out.
Borussia Monchengladbach goalkeeper Marc-Andre ter Stegen, Borussia Dortmund's Sven Bender and Julian Draxler of Schalke were al... 阅读全帖
p**********d
发帖数: 7918
23
来自主题: Soccer版 - 捷克尚能饭否?
http://www.bbc.co.uk/sport/0/football/18253669
Euro 2012: Injured midfielder Tomas Rosicky in Czech squad
Injured Arsenal midfielder Tomas Rosicky has been named in Czech Republic's
23-man squad for Euro 2012.
The 31-year-old, who is captain of the national team, suffered a pulled
muscle in Arsenal's final Premier League game of the season against West
Brom.
However, he is expected to be fit in time for the Czechs' opening fixture of
Euro 2012 against Russia on 8 June.
"Tomas Rosicky's condition... 阅读全帖
d***j
发帖数: 593
24
来自主题: Soccer版 - 吹停比赛的规则
你这个小本裁判学艺不精啊。以下摘自FIFA "Laws of the Game".
Exceptions to this ruling are to be made only when:
• a goalkeeper is injured
• a goalkeeper and an outfi eld player have collided and need
immediate
attention
• players from the same team have collided and need immediate
attention
• a severe injury has occurred, e.g. swallowed tongue, concussion,
broken leg
所以你们纠缠在两人受伤是否要吹停比赛是miss了point,point是裁判认为这两人是不
是需要“immediate attention”。
c**n
发帖数: 5275
25
来自主题: Soccer版 - 吹停比赛的规则

我自己动手搜了,你似乎断章取义了啊。
The exceptions to a player being required to leave the field of play for
treatment are
# a goalkeeper is injured
# a goalkeeper and an outfield player have collided and need immediate
attention
# players from the same team have collided and need immediate attention
# a severe injury has occurred, e.g. swallowed tongue, concussion, broken
leg
你列举的这些根本就不是裁判中止比赛的情况,而是球员可以留在场上治疗和治疗之后
可以直接比赛的情况。。。这个吧。。。
t********r
发帖数: 492
26
来自主题: Soccer版 - 来个分辨真伪球迷的越位题
伪球迷出题考自己.
behind the ball is not in an offside position
http://en.wikipedia.org/wiki/Offside_(association_football)
A player is in an offside position if three conditions are met: first, the
player must be in the opposing team's half of the field. Second, the player
must be in front of the ball. And third, there must be fewer than two
opposing players between him and the opposing goal line, with the goalkeeper
counting as an opposing player for these purposes. It is not necessary that
the goalke... 阅读全帖
c********w
发帖数: 2438
27
从quora上看到的……
第一个故事还是蛮感人的
This is a story when Cristiano Ronaldo was little and he was still a nobody.
He and his friend were vying for a spot in an academy of Andorinha in
Funchal, Madeira.
“I have to thank my old friend Albert Fantrau for my succes. We played
together for the same team in the U-18 championship. When a scout came to
see us he said that : “Who score’s more goals will come in our academy”.
“We won that match 3-0. I scored the first goal then Albert scored the
second with a great h... 阅读全帖
h*h
发帖数: 27852
28
来自主题: Soccer版 - 看看荷兰是怎么培养球星的
summary:
从小培养,以培养基本足球技术为主,少打比赛也不在乎比赛成绩,通过出卖成品青年
球星赚钱
How a Soccer Star Is Made
The youth academy of the famed dutch soccer club Ajax is grandiosely called
De Toekomst — The Future. Set down beside a highway in an unprepossessing
district of Amsterdam, it consists of eight well-kept playing fields and a
two-story building that houses locker rooms, classrooms, workout facilities
and offices for coaches and sports scientists. In an airy cafe and bar,
players are served meals and visitors can have a... 阅读全帖
w********9
发帖数: 8613
29
来自主题: Soccer版 - Messi vs Ronaldo
马拉多纳对两人的评价:
“Cristiano is a predator in front of goal. You can’t let Cristiano shoot
from anywhere in the opposition half.
Goalkeepers are scared of him. You have to be honest, goalkeepers are scared
of Cristiano. They are not so scared of Messi in those areas because he
doesn’t have the same power as Cristiano.
Cristiano is an incredible professional. I think at this present time he is
right up there at Messi’s level.
It’s not the case that Messi is better than Ronaldo or Ronaldo is better
than... 阅读全帖
T**********e
发帖数: 29576
30

老黑门将后来承认了,理直气壮赶超老马啊。
WOMEN'S WORLD CUP; Scurry Admits Bending Rule
Published: July 13, 1999
LOS ANGELES, July 12— Briana Scurry, the goalkeeper for the United States
women's soccer team, has admitted she might have bent the rules in making
the save during the penalty-kick tie breaker that helped her teammates beat
China for the Women's World Cup.
''Everybody does it,'' Scurry told The Los Angeles Times. ''It's only
cheating if you get caught.''
After China and the United States made their first... 阅读全帖
T**********e
发帖数: 29576
31
来自主题: Soccer版 - Why women don't cheat at soccer

Scurry这个太过分了,次次跑出球门老远,NYT都看不下去。
WOMEN'S WORLD CUP; Scurry Admits Bending Rule
Published: July 13, 1999
LOS ANGELES, July 12— Briana Scurry, the goalkeeper for the United States
women's soccer team, has admitted she might have bent the rules in making
the save during the penalty-kick tie breaker that helped her teammates beat
China for the Women's World Cup.
''Everybody does it,'' Scurry told The Los Angeles Times. ''It's only
cheating if you get caught.''
After China and the United States made ... 阅读全帖
i*********g
发帖数: 1940
32
来自主题: Joke版 - c罗赛后报恩
故事是真实的, C罗人很不错
http://soccer.indonewyork.com/never-told-before-heart-warming-s
This is a story when Cristiano Ronaldo was little and he was still a nobody.
He and his friend were vying for a spot in an academy of Andorinha in
Funchal, Madeira.
“I have to thank my old friend Albert Fantrau for my succes. We played
together for the same team in the U-18 championship. When a scout came to
see us he said that : “Who score’s more goals will come in our academy”.
“We won that match 3-0. I scored the f... 阅读全帖
p****s
发帖数: 32405
33
来自主题: Translation版 - 趁着世界杯东风翻点东西,求指正
Cruyff’s cardiac problems forced him to give up cigarettes but, sucking furiously on lollipops, he oversaw the emergence of a team that encapsulated his vision. Bar?a won the league in 1990–91 and went on to win it in each of the next three seasons as well. Even more importantly, in 1992 the Dream Team, as it became known, became the first Barcelona side to win the European Cup. Stoichkov happily played wide in that line-up, usually on the left but occasionally on the right; Laudrup by then was ... 阅读全帖
p****s
发帖数: 32405
34
来自主题: _FantaSoccer版 - 意甲Week18&Preview
鸟都把it选进大名单了
APPIANO GENTILE - JosMourinho has named a squad of 20 players (three goalkeepers, seven defenders, six midfielders & four strikers) for Wednesday's Serie A Week 18 match away to ChievoVerona (Stadio Marcantonio Bentegodi at 12:30):
Goalkeepers: 1 Francesco Toldo, 12 Julio Cesar, 21 Paolo Orlandoni.
Defenders: 2 Ivan Ramiro Cordoba, 6 Lucio, 13 Maicon, 23 Marco Materazzi, 25 Walter Samuel, 26 Cristian Chivu, 29 Giulio Donati.
Midfielders: 4 Javier Zanetti, 7 Ricardo Quaresma, 10 Wesle
o*******n
发帖数: 6500
35
来自主题: _FantaSoccer版 - 南非世界杯竞猜活动
这个fantasy的得分项少了好多
All players
Player is lined up in starting eleven 2
Player appears as sub during the game 1
Key contribution * (Assist) 2
Yellow card -1
Red Card -3
Penalty miss -3
Own goal -2
Goalkeeper
Clean Sheet 4
Goal conceded -1
Goal scored 10
Penalty save 3
Every 3 shots saved by a goalkeeper 1
Defender
Clean Sheet 4
Goal conceded -1
Goal scored 8
Midfielder
Clean Sheet 1
Goal scored 6
Striker
u***r
发帖数: 4825
36
来自主题: Military版 - 【Economist】Why China fails at football
http://www.economist.com/node/21541716
Why China fails at football
Little red card
The telling reasons why, at least in football, China is unlikely to rule the
world in the near future
Dec 17th 2011 | from the print edition
THE pass back to the goalkeeper seemed routine for Qingdao Hailifeng FC in
its match against Sichuan FC in September 2009, even if the ball was struck
a little too hard and the keeper only just managed to stop it running past
him and into the net. Qingdao was safely ahead 3-0... 阅读全帖
b********n
发帖数: 38600
37
来自主题: Military版 - 黑苹果 iCloud 的是微软的人吧?
THE 101 ALLEGED VICTIMS OF THE HACK
AJ Michalka, American actress, singer-songwriter, and musician
Alyson 'Aly' Michalka, AJ's sister, also an American actress
Allegra Carpenter, actress, best known for The Fault In Our Stars
Abigail Spencer, American actress
Alana Blanchard, American professional surfer and bikini model
Alexa Jane, model
Angelina McCoy, actress, best known for Enchanted
Anna O'Neill
Ashley Blankenship, actress, appeared in The Wolf Of Wall Street
Aubrey Plaza, American actress ... 阅读全帖
e*******e
发帖数: 9616
38
来自主题: Military版 - 前苏联足球先生被draft,拒绝参战
现任乌克兰国家队教练
Soviet football legend Aleksandr Zavarov said he will not fight in the
eastern Ukraine conflict, after reports surfaced that a draft notice bearing
the 53-year-old’s name was delivered to the Football Federation of Ukraine
(FFU) last week.
Zavarov, who was born in Lugansk, has categorically refused to comply with
the notice.
“I will say one thing, I will never fight where my family and kids live,
where my parents are buried,” the assistant coach for the Ukraine national
team said. “I ... 阅读全帖

发帖数: 1
39
来自主题: Military版 - 磁炮时,提到不论初速多高
我在前一篇文章讨论共军的新电磁炮时,提到不论初速多高,任何弹丸的海平面平射有
效射程都不可能超过40公里。结果自然有人质疑这个结论(不盲目迷信权威,是件好事
,即使这个权威就是我),但是因爲这种流体动力学的问题,没有简单的理论解,现象
极度複杂,我无法在留言栏的有限空间里好好解释。考虑了一会儿,觉得虽然有点太专
精,但是一般军迷和媒体都可能会对超音速弹丸受空气阻力而减速的问题有兴趣,却又
从没有人把它科普过,所以我虽不是弹道学专家,还是以物理人的身份讨论一番。不是
理工出身的读者,可以径行忽略这篇文章。
一般科普文章谈到空气阻力,都说阻力= ρ * A * Cd * v^2 / 2 (v是速度,ρ是空气
密度,A是物体的横截面),那么我们只要测量阻力系数Cd,就可以知道在不同速度下
,阻力有多大。换句话说,在空气中穿行的物体,形状可以很複杂,尺寸大小也各自不
同,但是这些影响空气阻力的种种因素(除了速度、空气密度和横截面积之外),全部
被包容到一个系数里去了。例如汽车的Cd,一般轿车在0.28左右,休闲车是0.35,皮卡
则接近0.4。这样的公式,只有在Cd不随速度变化的前提下才有大用... 阅读全帖

发帖数: 1
40
来自主题: Military2版 - 王孟源 谈超音速弹丸
我在前一篇文章讨论共军的新电磁炮时,提到不论初速多高,任何弹丸的海平面平射有
效射程都不可能超过40公里。结果自然有人质疑这个结论(不盲目迷信权威,是件好事
,即使这个权威就是我),但是因爲这种流体动力学的问题,没有简单的理论解,现象
极度複杂,我无法在留言栏的有限空间里好好解释。考虑了一会儿,觉得虽然有点太专
精,但是一般军迷和媒体都可能会对超音速弹丸受空气阻力而减速的问题有兴趣,却又
从没有人把它科普过,所以我虽不是弹道学专家,还是以物理人的身份讨论一番。不是
理工出身的读者,可以径行忽略这篇文章。
一般科普文章谈到空气阻力,都说阻力= ρ * A * Cd * v^2 / 2 (v是速度,ρ是空气
密度,A是物体的横截面),那么我们只要测量阻力系数Cd,就可以知道在不同速度下
,阻力有多大。换句话说,在空气中穿行的物体,形状可以很複杂,尺寸大小也各自不
同,但是这些影响空气阻力的种种因素(除了速度、空气密度和横截面积之外),全部
被包容到一个系数里去了。例如汽车的Cd,一般轿车在0.28左右,休闲车是0.35,皮卡
则接近0.4。这样的公式,只有在Cd不随速度变化的前提下才有大用... 阅读全帖
u*********e
发帖数: 9616
41
来自主题: Olympics版 - empty net了,我靠
goalkeeper哪去了?
s**u
发帖数: 9035
42
YAOUNDE (Reuters) - Seven Cameroon athletes have disappeared while in
Britain for the London Olympics, the Ministry of Sports and Physical
Education said on Monday evening.
The seven - five boxers, a swimmer and a soccer player - are suspected of
having left to stay in Europe for economic reasons.
"What began as rumor has finally turned out to be true. Seven Cameroonian
athletes who participated at the 2012 London Olympic Games have disappeared
from the Olympic Village," David Ojong, the mission... 阅读全帖
l****z
发帖数: 29846
43
来自主题: USANews版 - 不错, 国家女足闯入半决赛
US defeats China 1-0, plays Germany in World Cup semifinals
By ANNE M. PETERSON | June 26, 2015 | 10:10 PM EDT
OTTAWA, Ontario (AP) — Carli Lloyd scored on a header in the 51st minute,
and the United States beat China 1-0 Friday night to reach a semifinal
against Germany at the Women's World Cup.
Hope Solo had her fourth straight shutout for the second-ranked United
States, which has reached the final four of all seven Women's World Cups but
has not won since beating China on penalty kicks for t... 阅读全帖
n********d
发帖数: 7676
44
来自主题: USANews版 - 不是说巨富多左逼吗?
你们来批判批判巨富的左逼行为吧。
美国对外援助已经帮助发展中国家在对抗疾病和贫困方面取得巨大的进步——而现在绝
非缩减援助规模之时。
ENLARGE2015年4月29日,在卢旺达Gashora的一个难民营里,安泽国际救援协会(
Adventist Development and Relief Agency)的工人们卸下来自美国国际开发署的一箱
箱食用油。 图片来源:J. LAWLER DUGGAN/THE WASHINGTON POST/GETTY IMAGESBILL
GATES / MELINDA GATES2017年 09月 26日 18:04评论
过去17年中的几乎每一天,我们夫妻俩都在为对抗疾病与饥饿的斗争出力,但是今天,
我们深感担忧。在经历了历史性飞跃的十多年后,世界各国援助最贫穷人口的决心比我
们启动基金以来的任何时刻都更充满变数。
特朗普总统已经建议将美国国务院预算削减30%,包括为美国国际开发署(U.S. Agency
for International Development)提供的资金以及美国在全球卫生领域的大部分投资。
美国国会不大可能接受如此大幅度的预算削减... 阅读全帖
z***0
发帖数: 4609
45
“ The FIFA has announced that women will be official goalkeepers in the
coming World Cup 210.. Because no matter how wide they open they never let
the balls in "
笑死了
w*****7
发帖数: 478
46
1) 相信自己的本能 上班痛苦 老板穿小鞋 都是信号
2)老板是goalkeeper 得罪谁也不能得罪老板 全世界都一样 积极天天汇报老板工作
3)别自己以为技术第一 就沉默不语自以为老老实实 大忌 这里的文化就是吹牛逼 一
定事事表现
4) 开会聊天要积极发言 对自己职业发展必备 千万不要当哑巴
5) 一定维持一个2个好的同事 可以将来帮忙的
6)多认识人 多条路
w********9
发帖数: 8613
47
来自主题: Parenting版 - 踢足球影响长个子??
这是一个对soccer的统计:
In a game, about 1/3 time on walking, 1/3 jogging, 1/5 running, and 1/8
sprinting.
我选出来的几套DVDs。
DVD1 (set of 3 DVDs): 1-2-3 goal BY Wiel Coerver Soccer (definitely one of
the best soccer programs for kids)
DVD2 (Set of 3): Coerver fundamentals WITH Wielf Coerver (also one of the
best)
DVD3: The Anson Dorance Legacy Soccer Clinic (women soccer coach at UNC, the
best collegiate soccer proram)
A lot of breakdowns and slow motions for learning skills.
DVD4: Success in Soccer: prac... 阅读全帖
w********9
发帖数: 8613
48
来自主题: Parenting版 - 关于孩子的体育班

没问题。这是我去年四月写的。(以后会加上。)
DVD1 (set of 3 DVDs): 1-2-3 goal BY Wiel Coerver Soccer (definitely one of
the best soccer programs for kids)
(他去年去世了。现在Corver Cocahing有个不错的Make Your Move系列。)
DVD2 (Set of 3): Coerver fundamentals WITH Wielf Coerver (also one of the
best)
DVD3: The Anson Dorance Legacy Soccer Clinic (women soccer coach at UNC, the
best collegial soccer proram)
A lot of breakdowns and slow motions for learning skills.
DVD4: Success in Soccer: practicing with 8 to 12 olds (official Germa... 阅读全帖
w********9
发帖数: 8613
49
来自主题: Parenting版 - 关于孩子的体育班

没问题。这是我去年四月写的。(以后会加上。)
DVD1 (set of 3 DVDs): 1-2-3 goal BY Wiel Coerver Soccer (definitely one of
the best soccer programs for kids)
(他去年去世了。现在Corver Cocahing有个不错的Make Your Move系列。)
DVD2 (Set of 3): Coerver fundamentals WITH Wielf Coerver (also one of the
best)
DVD3: The Anson Dorance Legacy Soccer Clinic (women soccer coach at UNC, the
best collegial soccer proram)
A lot of breakdowns and slow motions for learning skills.
DVD4: Success in Soccer: practicing with 8 to 12 olds (official Germa... 阅读全帖
t******l
发帖数: 10908
50
“让孩子自己做主,地球上就不可能有音乐家,运动员,医生律师这些职业了”
Luciano Pavarotti was born in 1935 ... Although he spoke fondly of his
childhood, the family had little money ... World War II forced the family
out of the city in 1943. ... young Pavarotti developed an interest in
farming... After abandoning the dream of becoming a football goalkeeper,
Pavarotti spent seven years in vocal training.
http://en.wikipedia.org/wiki/Luciano_Pavarotti
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