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全部话题 - 话题: angle
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r****t
发帖数: 10904
1
【 以下文字转载自 WaterWorld 讨论区 】
发信人: fighter644 (武士), 信区: WaterWorld
标 题: Re: 原来JK脱口秀是由职业writer团队写出脚本的, Co-head Writer为
发信站: BBS 未名空间站 (Sun Oct 27 15:50:38 2013, 美东)
Talking to Molly McNearney, the Co-Head Writer of Jimmy Kimmel Live
http://splitsider.com/2011/11/talking-to-molly-mcnearney-the-co
One of the most hot button issues in comedy right now is the lack of women
writing for late night. Molly McNearney is the only woman who currently
writes for Jimmy Kimmel Live, but she is also the co-head w... 阅读全帖
W****2
发帖数: 297
2
来自主题: SanFrancisco版 - 达人帮帮推荐一款相机吧
Nikon Coolpix L110 12.1 MP Digital Camera with 15x Optical Vibration
Reduction (VR) Zoom and 3.0-Inch LCD (Black)
$220
Kodak EasyShare Z981 14MP Digital Camera with Schneider-Kreuznach Variogon
26x Wide Angle Optical Image Stabilized Zoom Lens and 3.0 Inch LCD
$202
Fujifilm FinePix S2550 12 MP Digital Camera with 18x Wide Angle Optical Zoom
and 3-Inch LCD
$185
Fujifilm FinePix S1800 12.2 MP Digital Camera with 18x Wide Angle Optical
Dual Image Stabilized Zoom and 3-Inch LCD
$160
k*****a
发帖数: 1463
3
来自主题: Seattle版 - 新的全国高中排名
Well, I heard that. Nevertheless, i don't think "good" shall have trouble
beating "bad", yet it failed on ALL aspects.
Only explanation is ranking is hosting some nonsense angle, such as school
janitor's hair style. Angles such as whether the school helps low income families.... -- i don't care about this angle.
N*D
发帖数: 3641
4
来自主题: Seattle版 - [合集] 新的全国高中排名
☆─────────────────────────────────────☆
pistone (古代的事物) 于 (Tue Dec 16 23:02:13 2008) 提到:
世界新闻和美国报道的。东边的四大牛高中:international, international
community, bellevue 和newport 属于玉龙的。。。全国一共一百个,华盛顿州就这四
个。
第二等金凤级别,华盛顿州拾贰个,eastside有redmond, woodinville, interlake,
mercer island。
再下一等的附近只有inglemoor.
sammamish 和issaquah都没有进入呵呵。
☆─────────────────────────────────────☆
todayzj (皮皮妈 特呆 开始新生活) 于 (Fri Mar 11 02:14:28 2011, 美东) 提到:
为什么mercer island高中是第二等的啊,我查了最近五年平均的考试成绩,
是WA 三百八十几个高中里排第一的。他们都是根据什么排名的啊?

☆... 阅读全帖
p*****y
发帖数: 1049
5
来自主题: Texas版 - 休士顿修车经历
用卷尺测量前轮前端间距与前轮后端间距,然后调整toe angle 最简单的方案就是让两
个间距相等
camber angle可以用水平尺测量后轮的角度,让前轮角度与之相等
caster angle可以用水平尺测量前柱角度,八九不离十就行,不必太准确
一般toe是最后做的,但是我的经验是顺序无所谓,一般差别不大
d********r
发帖数: 3279
6
【 以下文字转载自 Fishing 讨论区 】
发信人: dogwhisper (er), 信区: Fishing
标 题: 溪钓白鲈兼 GoPro HD Hero 2 Camera 野外测试
发信站: BBS 未名空间站 (Thu Sep 20 23:56:29 2012, 美东)
GoPro HD Hero 2 review 网上有很多,就不多写了,总体感觉还不错,很适合野外爬
山钓鱼,记录每一刻惊喜。它最大的缺点是用自带的防水 housing 水下拍摄确实有臭
名昭著的不能 focus 问题(见下3,4视频),已经订了GoPro 新出的 dive housing,
收到后再做测试。还有个缺点就是野外没有电脑不能及时回放,所以如果有时候相机位
置不好拍了一天都不知道是废的, 所以 GoPro 即将推出的可以在手机上 real time 回
放的 wifi pac 也将是必不可少的。
溪钓白鲈(1080p 170 Degree angle):
傍晚 hiking(1080p 170 Degree angle):
under water (1080p 170 Degree angle... 阅读全帖
r********n
发帖数: 6979
7
来自主题: Fishing版 - Bass出水以后能活多久?
今天做了点research. 大部分老美的说法是1-2分钟没有问题, 再长就不行了. 不过基
本都是经验之谈, 找到了这篇文章是evidence based. 作为大家参考
RE-EXAMINING "HOLDING YOUR BREATH" GUIDELINES
I've come across two truly fascinating studies concerning largemouth
bass and hypoxia. One was published a year ago, the other is set for
publication very soon. In both cases they studied varying amounts of air
exposure after exercise/angling that a bass could be subjected to. One
was done in the lab, one in the field. Both have reached the same basic
conclusion. C... 阅读全帖
d********r
发帖数: 3279
8
GoPro HD Hero 2 review 网上有很多,就不多写了,总体感觉还不错,很适合野外爬
山钓鱼,记录每一刻惊喜。它最大的缺点是用自带的防水 housing 水下拍摄确实有臭
名昭著的不能 focus 问题(见下3,4视频),已经订了GoPro 新出的 dive housing,
收到后再做测试。还有个缺点就是野外没有电脑不能及时回放,所以如果有时候相机位
置不好拍了一天都不知道是废的, 所以 GoPro 即将推出的可以在手机上 real time 回
放的 wifi pac 也将是必不可少的。
溪钓白鲈(1080p 170 Degree angle):
傍晚 hiking(1080p 170 Degree angle):
under water 4倍慢镜头(1080p 170 Degree angle):
under water 4倍慢镜头(WVGA 848x480 120FPS):
W****i
发帖数: 1314
9
爆钓!!
当时还在板上发帖问鱼竿,多谢大家的帮助!最后在bass先生的推荐下,决定买两根比
较软的inshore杆。事实证明这是非常正确的。我最后选了line rating在8-15lb Penn
Allegiance Spinning和 Penn Squadron Casting。觉得鱼竿对于渔人的就像画笔之于
画师,只有合适的软硬粗细,才能给game fish呈现一个最理想的画面。而这两根杆,
在我拿起它们的一刹那,就觉得它们肯定能画出我要的感觉。
另外,到沃尔玛买了一双防水保暖靴,一双厚厚的work glove。
万事具备,只欠东风!周末恰好天气合适, 小雨转多云,没有大风。我起了一个大早,
7点就到launch,1小时后划到水深20ft的第一个钓点,开始jigging。这次我的手法有
所改变,butterfly jigging的那种快收的办法只有当我在最密集的鱼群顶上时用,如
果鱼群稍微thin一点,我会用比较慢的手法。头半小时就有5条鱼上钩,而且比之前两
回都大19-24. 之后又一段时间更是jig 刚刚落下就立刻被咬!count到15条鱼以后,我
改变了战法,在鱼群的边缘,... 阅读全帖
T**r
发帖数: 7016
10
你的啥工具这么厉害,割金属两三分钟的事情?我觉得如果用angle grinder切那个锁
的话得费10分钟左右,以前没有试过用angle grinder切不锈钢。
这种门应该是有一层galvanized薄铁皮包着,除了angle grinder我也想不出其它啥工
具更有效,receptacle saw不知道行不行。
f*******n
发帖数: 5241
11
来自主题: Fitness版 - 今晚gym有个男生说我strong

是标准push-ups。不过我女儿说她们学校搞这个challenge的时候不测
这一项了,也许是知道她们难以达到?:)以下摘自上面我给的网站。
我家姑娘去年得的是Presidential Physical Fitness Award。那个要测
的话11岁小姑娘要做19个俯卧撑。老实说她们学校老师有点放水。
The Presidential Physical Fitness Award
Participants must at least reach these levels in all 5 events in order to
qualify for the PresidentialPhysical Fitness Award. These levels represent
the 85th percentile based on the 1985 School Population Fitness Survey.
The National Physical Fitness Award
Participants must at least reach these levels in... 阅读全帖
s***r
发帖数: 358
12
来自主题: Fitness版 - 请教一个深蹲的问题
It'd be easier for us to see and understand your problem if you could show
us a video of your squat. The best angle to shoot a squat video is the side
angle and 45 degree front and/or back angle.
d***f
发帖数: 155
13
考虑换个 putter,现在用的是个$20块买的,用着不爽,主要是觉得它的 Lie Angle
对我来说太 upright 。索性想换个好点的算了,看了看网上的讨论,以下几个评价还
不错的
Odyssey 2-Ball with SRT
Guerin Rife 2-Bar putter
SeeMore FGP
价格应该都在 $200 以内。现在倾向于 Guerin Rife 的那个,看网上评价相当不错,
而且仿佛可以自己调 Lie Angle,所以以后要改 Setup up posture 的话也不用花钱调
Lie Angle。准备明天去 Golf Galaxy 试一试,感觉好的话就下手了。
ET 大侠用的是什么 Putter ? 对这几个有过研究吗?
t*****n
发帖数: 467
14
来自主题: Golf版 - Question about golf fitting
I think you can use that chart as a ref, but lie angles are more determined
by your swing. Besides, the standard lie angle defined by different company
may be slight different. What's the color code for your friend's ping iron? If
you find significant difference by swinging his club, then you may need get
fitted. Well, that's just my opinion. The fitting session may cost 30~50,
and lie angle adjust may cost 3~4 per club. Good luck.
p***t
发帖数: 51
15
来自主题: Golf版 - Question about golf fitting
Thank you very much typoon! I have no idea about the color code of his ping
set.
However, I just took a careful measure of myself and by golfspyer, i am in
the regular range.
Here is the suggested lie angle and length of shaft:
Lie Angle Length of Shaft
Driver 50 degrees 44.5 inches
3-Iron 58 degrees 38.5 inches
This is what I have:
Lie Angle Length of Shaft Club
Driver 59 degrees 45 inches Cleveland Hibore Graphite
3-Iron 61 degrees
v*****r
发帖数: 2325
16
来自主题: Golf版 - 太挫折了
赞总结精辟...
" 他的头可以保持不动", 很关键. 是SPINE ANGEL 没有太多变化的的表现.
SHORT GAME 可以多练一些.
FULL SWING 确实要在FUNDAMENTALLY 正确的路线上练。。。找到最舒服的发力方式。
。。 那基本上就是您个人特有的TEMPO 和节奏了。。。
我去年就是FULL SWING 总是调来条去。。。结果是我一个月不碰竿刚出来打的时候,
DRIVER SWING 还凑和。。。 然后打练的越多越烂。。。
我最近主要想SPINE ANGLE, PIVOT, TEMPO 和节奏,和用球竿划出一个SWING PLANE。
SPINE ANGLE 保持了, UPPER & LOWER BODY SEPARATION 自然就出来了。。 而SPINE
ANGLE 和头的不动, 是来自好的FOOT WORK。 好象一切都是从 脚和膝开始。。。
GRIP 和手腕要松, 但是最后IMPACT 那一下, 紧硬一下,HELPS WITH GETTING RID
OF FLIPPING
以前60 度LW 基本上用不了, 现在上坡都可以打70米。。。 DRI
v*****r
发帖数: 2325
17
来自主题: Golf版 - Golf Shot Analysis
the number after launch angle could be attach angle. yours are all
negative,
indicating that you slightly hit down with driver (like iron). 估计是你故

打底求控制。
swing speed 104, 球速151 不太可能carry 270.
http://www.pgatour.com/r/stats/info/?02409
pgatour stats hunter mahan, average swing speed 110, carry 270
不知道是不是store设置的估计算多
点, 这样客户开心一点。
我上次实验adams speedline 打出 3个 300 吗, 到了range结果差得多。
swing speed 慢, back spin 多一点可以多carry. 但是落地少滚。如果fairway 容易
滚, back spin 或大伙小, 距离差不多。
swing speed fast, back spin 小好。

car... 阅读全帖
v*****r
发帖数: 2325
18
来自主题: Golf版 - Golf Shot Analysis
the number after launch angle could be attach angle. yours are all
negative,
indicating that you slightly hit down with driver (like iron). 估计是你故

打底求控制。
swing speed 104, 球速151 不太可能carry 270.
http://www.pgatour.com/r/stats/info/?02409
pgatour stats hunter mahan, average swing speed 110, carry 270
不知道是不是store设置的估计算多
点, 这样客户开心一点。
我上次实验adams speedline 打出 3个 300 吗, 到了range结果差得多。
swing speed 慢, back spin 多一点可以多carry. 但是落地少滚。如果fairway 容易
滚, back spin 或大伙小, 距离差不多。
swing speed fast, back spin 小好。

car... 阅读全帖
d******l
发帖数: 21
19
几年前,密城高球江湖上没人把帽子当回事,即使林前队和陈地主曾将绿色帽子戴在头
上招摇于球场之上,也没引起多少轰动。江湖上一致认为,帽子乃球外之物,可有可无
,与球技扯不上关系。
与高尔夫球有直接接触的杆子自然成了时尚的近水楼台,受到大家重视。大侠们纷纷将
钱财投资到杆子上。李老师和汪大夫对杆子的使用最佳期限进行了深入研究, 认为杆
子必须年年换。并解释说,杆子和使用者的关系如同婚姻。婚姻有七年之痒, 杆子也
有一年之痒,用过一年的杆子基本上就风韵无存,撩不起使用者的激情了。好的选手对
杆子必须有喜新厌旧的良好态度。
小韩十分接受这种老杆子没激情的思想。但苦于夫人也是高球高手,直接以此理由买新
杆子很难通过审批。于是,小韩找到了一种理论,说杆子的lie angle严重影响成绩。
于是他在某商店搞来一个试验报告,说他的身材要求的lie angle应比标准lie angle要
平两度。有此科学依据,夫人不好拒绝,小韩高高兴兴地换了豪华新杆。
陈地主不仅不同意所谓一年之痒,还有自己的一套理论,他认为杆子如同朋友,越老越
有默契。为了证明其理论正确,陈地主四处收集旧杆子,最高价钱定在一美元一根。... 阅读全帖
d**e
发帖数: 1124
20
来自主题: GunsAndGears版 - CMC上面一些MAgpul的东西在打折
$14 MOE AR grip looks hot
The angled fore grip looks a great deal too, but i wonder what's the
benefits of the angled over vertical one? It surely looks great... Does
anyone here use the angled fore grip?
b****r
发帖数: 1395
21
来自主题: Hockey版 - 再论冰刀(术语)
注:本文仅适用于hockey skates和figure skates。
我极力推荐初学者使用hockey skates作为入门,不但是我个人的体会,而且是有理论
依据支持的。
《关于冰刀》中曾经介绍过冰刀的几个要素,两个edge,一个hollow,这里咱们再深入
的探讨其它的几个要素。
几个术语:
ROH: Radius of Hollow从冰刀的截面观察,两个edge和中间的hollow实际上是一段弧
线,这段弧线所在的圆的半径就是这里所说的ROH。对于相同宽度的刀刃如果ROH越大,
那么hollow就越浅。但事实上不同的刀的宽度也是不一样的,同样的ROH越薄的刀磨出
来的hollow越浅。所以这里引出下面一个术语。
bite angle: 还是从冰刀的截面观察,以edge为切点作hollow所在的圆的切线,这条切
线与两个edge所在的直线所够成的角就要bite angle。bite angle越大hollow就越深而
ROH也就越小。
rocker: 从侧面观察冰刀,刀的两端实际上是圆弧,这里冰球刀明显而花样刀不那么明
显。这个圆弧就称为rocker。这个圆弧所在的圆的半径越小
w**d
发帖数: 1476
22
来自主题: NCAA版 - 热烈庆祝OSU 没太掉链子
you don't have to be an engineer to acknowledge the 2nd pic has a better
angle
(or I should say 0 angle).It IS an indisputable evidence (while the 1st
one is not because of the non-zero viewing angle).
Anyway, all water under bridge, and it doesn't change the outcome. But let's
do respect the fact and not let our loyalty to school alter our judgement.
e******u
发帖数: 537
23
Proponents of the college football rule proposal to give defenses 10 seconds
before each play to substitute players have said that the change has player
safety in mind.
However, an NCAA rules committee member says that there's "not really much
hard data" supporting the player safety angle.
"I think it's fair to say it's one of those things that's been growing,"
committee member Rogers Redding told CBS Sports, "It hasn't been a huge
surge. It's kind of one those things that was floating in the ba... 阅读全帖
m*******a
发帖数: 363
24
来自主题: Outdoors版 - keylargo july 7 潜水video (转载)
dive housing doesnot affect wide angle.
but when i pick HD, the angle gets reduced.
if you pick second to HD, you still get to have wide angle.
m*******a
发帖数: 363
25
来自主题: Outdoors版 - keylargo july 7 潜水video (转载)
technical support said, they have never seen this defect before.
it was so rare that they asked me to send mine back to their technical
headquarter office instead of return warehouse.
They are in process of product review now. they said mostly are leakage
through housing itself (which is not under warranty). I googled defects
online, didnot find any.
the wide angle you are referring to , was it angle greater than 270 deg?
i dont think dive housing lens affect that,
it is just when i pick differe... 阅读全帖
d********r
发帖数: 3279
26
【 以下文字转载自 Fishing 讨论区 】
发信人: dogwhisper (er), 信区: Fishing
标 题: 溪钓白鲈兼 GoPro HD Hero 2 Camera 野外测试
发信站: BBS 未名空间站 (Thu Sep 20 23:56:29 2012, 美东)
GoPro HD Hero 2 review 网上有很多,就不多写了,总体感觉还不错,很适合野外爬
山钓鱼,记录每一刻惊喜。它最大的缺点是用自带的防水 housing 水下拍摄确实有臭
名昭著的不能 focus 问题(见下3,4视频),已经订了GoPro 新出的 dive housing,
收到后再做测试。还有个缺点就是野外没有电脑不能及时回放,所以如果有时候相机位
置不好拍了一天都不知道是废的, 所以 GoPro 即将推出的可以在手机上 real time 回
放的 wifi pac 也将是必不可少的。
溪钓白鲈(1080p 170 Degree angle):
傍晚 hiking(1080p 170 Degree angle):
under water 4倍慢镜头(1080p 170 Degree ... 阅读全帖
b******n
发帖数: 352
27
来自主题: Pilot版 - side slip和crab的区别是什么呢
我觉得做side slip就一定有crab angle, 有crab angle的时候,肯定是有banking
angle和相反方向的rudder配合的。
大家评价一下啊。
f******2
发帖数: 1027
28
来自主题: Pingpong版 - 乒乓球术语中英文对照(转帖)
Aarons, Hughes Ruth || (USA) 1936 and 1937 World Champion (Women’s single)
accuracy | 准确(性)| n.
ace | 发球得分 | n.
adjust | 调整 | v.
advantage | 优势 | n.
aggressive | 具有进攻性的 | a.
agile | 灵活的 | a.
agility | 灵活(性) | n.
all-out | 全攻型的 | a. an all-out hitter
all-round | 全能的,技术全面的 | a. It’s good to have an all-round game and
play all the strokes properly. ||
American grip (See Seemiller grip) np.
An | 安宰亨 (韩国选手) | (KOR) ?
angle (closed angle; open angle) | 角度(合角/朝下,仰角/朝上) | n.
anti- (anti-topspin; anti-lo
L***0
发帖数: 1283
29
The running biomechanics is complex. Certainly more stride angle doesn't
always mean better, faster running. Taking anything to the extreme will
backfire. On the other hand, I'm sure for some runners, especially crappy
hobby runners with no flexibility like myself, more stride angle could be
used. There is no overstriding issue as long as a good cadence and midfoot/
forefoot strike is maintained. I certainly feel that I get a bigger stride
angle when I run 6 min pace or under on the treadmill, m... 阅读全帖
L***0
发帖数: 1283
30
first let me clarify that I was talking about stride angle, not strike angle
. The two have nothing to do with each other. large stride angle has little
to do with overstriding or not.
also, it is not clear that heel striking costs more energy. The problem with
heel striking is risk of injury, not efficiency.
B*N
发帖数: 147
31
i'm no expert, but here's something from Harald Harb's PMTS:
control your speed by carving with a shortened radius, by
1. placing most of your body weight on outside ski such that the ski arcs
under pressure, and
2. tipping your skis to a higher angle.
it's said that pressure and ski angle are interchangeable in terms of
shortening the radius. as long as the
radius is shortened enough, you can carve with great ski grip and speed
control.
but of course it's not easy to achieve a high angle, and t... 阅读全帖
S********t
发帖数: 3431
32
来自主题: Ski版 - 求教 short radius turn
我认为是风格不同导致的教学方式不同。
这个视频里面的先从link short radius skidding开始教起,然后期待学生在练习中自
然而然
的体会增加edging angle。
另外的教学就是一开始就强调carved turn强调edging angle,快速的伸缩收腿和节奏感
这个就跟先教wedge还是平行的争论类似。前者容易上手学,后者需要有一定的基础水
平。前者容易给初学者形成不好的习惯,ie,通过加力skidding而不是加大edging
angle来控制半径
O****e
发帖数: 3290
33
来自主题: Ski版 - 今天第一次DIY ski edge tuning
Base edge angle越小越aggressive, 1°是recommended for advanced all mountain
skier. 我买了.75和1°,结果都没法用,在考虑是否把我的carving ski整个base磨平
点低点,重新bevel base angle, 不过还是要再买一个1.5°, 给另一幅Mid-fat ski
用。side edge angle 2°倒是正好,也比较好处理。

30
O****e
发帖数: 3290
34
来自主题: Ski版 - 今天第一次DIY ski edge tuning
你是说base edge bevel吧,一但bevel angle做好了,就要避免用file(锉刀)去磨
用石头打磨应该还是可以的吧,算是routine的maintenance

偶最近也在自个搞,搞的结果发现
1) ski base is not as flat as you would think. It's almost always slightly
concave especially for wide skis.
2) My ski base bevel angle is > 1° although I have to use a true bar to
convince myself there is an angle.
3) Depending on how much you want to do it yourself and how nice you want
the work to be done which directly determines how expensive you are willing
to spend on equipment, it wi... 阅读全帖
E*******e
发帖数: 1371
35
“Slopes flatter than 25 degrees or steeper than 60 degrees typically have a
lower incidence of avalanches. Human-triggered avalanches have the greatest
incidence when the snow's angle of repose is between 35 and 45 degrees; the
critical angle, the angle at which human-triggered avalanches are most
frequent, is 38 degrees. ”
楼主滑的地方,20度左右的坡,基本上认为是安全的。Berthoud Pass停车场周围可以
滑的地方很多,但是安全的就只有东西两侧各一条道。
w********o
发帖数: 1231
36
你这个牛,我还从来没有想过这个,视角的问题。的确,angle up 后,看上去是分的
很开了。涨姿势了!


: 那是你的错觉。很多人看到一些比赛选手在最高速时两个版分得很开,就自然而
然以为

: 他们wide stance.

: 其实原因是在这种高速中,他们的tip angle非常大。在这种雪板几乎与雪面垂
直的tip

: angle情况下,雪板靠得太近两个脚就打架了。

: 再仔细看一下这些很多人认为是"wide stance"的照片或者视频瞬间,观察一下
他们的

: 膝盖,看看是分开还是靠紧的。

w********o
发帖数: 1231
37
你这个牛,我还从来没有想过这个,视角的问题。的确,angle up 后,看上去是分的
很开了。涨姿势了!


: 那是你的错觉。很多人看到一些比赛选手在最高速时两个版分得很开,就自然而
然以为

: 他们wide stance.

: 其实原因是在这种高速中,他们的tip angle非常大。在这种雪板几乎与雪面垂
直的tip

: angle情况下,雪板靠得太近两个脚就打架了。

: 再仔细看一下这些很多人认为是"wide stance"的照片或者视频瞬间,观察一下
他们的

: 膝盖,看看是分开还是靠紧的。

t*******r
发帖数: 22634
38
来自主题: Swimming版 - 小白练习自由泳的请教问题
是。。。不过还有另一个因素,就是重量减去浮力之后的下沉力。下沉力最终要和
速度配合 angle-of-attack 获得升力平衡。。。所以低速游泳需要更大的
angle-of-attack。
另外一个是,下沉力还跟呼吸相关,因为呼吸至少鼻子要露出水面。所以很多时候,
一成不变的 angle-of-attack,不如略略有些 wave 式,更省力。(好吧,
俺承认是理论工作者,这个精确掌握其实俺做不到。俺目前装备的陀螺仪比较菜,
打算过几天 Amazon 上去进货个高级货陀螺仪。:-P)。
t*******r
发帖数: 22634
39
来自主题: Swimming版 - 小白练习自由泳的请教问题
这个对马工屌丝还是有点问题的,这个俺跟呼吸一起说。
首先这个不是弧面的问题,而是 angle-of-attack (和水平面的角度),
直面也可以有升力,甚至很多时候是主导因子。。。具体要看流体力学。。。
但是简单的看,空空导弹的四个尾翼,没有弧面。弹体也是圆柱形旋转对称
(因为这玩意儿设计成随时向任何方向转弯,而不像飞机要先摇翅膀)。
马工屌丝的问题,第一是肌肉不够肥厚,浮力也就不够多。第二最重要的是
速度和能量。angle-of-attack 提供升力,但是或多或少要损失一点能量
和速度。这一点对泳装运动员不是问题,但是屌丝就那么一点能量和速度。
这个能量和速度,还涉及氧债问题。。。对于泳装牲口而言,氧债问题,
多吸点气就完事了。。。可是马工屌丝的肺不够给力啊(相当于发动机的
压气机不行),要消除氧债,怎么吸气都不一定有用,最终还是要少发力
(相当于少喷油)。但是少发力,速度和能量又不够了。。。
另外泳装牲口高速前进的时候,嘴可以躲在头顶顶水形成的那个大波后面
造就的乳沟里吸气(不许想歪了)。。。但是马工屌丝龟速游泳的时候,
尼玛哪里有啥大波,这分明就是一飞机场。。。谁跟俺说飞机场... 阅读全帖
i*********5
发帖数: 19210
40
来自主题: Swimming版 - 讨论一下抱水的问题
再说说手和手腕,到了高级阶段后,入水后手腕可以有些向下弯(但还是不能弯你上面
截屏那么多)。
你看看这篇文章对Katie Ledecky的描述:
5 Things All Swimmers And Triathletes Can Learn From Katie Ledecky’s
Freestyle
http://effortlessswimming.com/freestyle/5-things-all-swimmers-a
5. Hand Always Angled Down From Forearm During Pull
In every part of her catch and pull, Ledecky maintains a forward hand
position where she angles her hand slightly down from her forearm. This
helps her hold more water with each stroke and allows her to ‘anchor’
herself during the c... 阅读全帖
b*******e
发帖数: 724
41
来自主题: Tennis版 - 如何对付牛皮糖对手

If you are really hitting at very good angle left then right a couple of times
with good pace, most people won't be able to run it down. If you don't have
sharp angle and good pace on the ball, there is another way to beat a pusher.
Draw him to half court. Hit a slow ball to half court, then he has to get into
half court to be able to hit it. Once he is no longer on the baseline(in half
court) he won't be able to chase down your corner shot even the shot is not
sharply angled. Because the react
f*******r
发帖数: 257
42
来自主题: Tennis版 - 【技术抛砖贴】说说球旋转
That's about right. That's the difference between topspin and pop. Both
are "topspin". The difference is at the angle the ball was hit and hence
the angle the ball lands. For topspin, usually you hit it upwards, the
trajectory is similar to lob. When it lands, it has a larger angle.
Therefore, when it bounces, it jumps high. If you hit a "topspin" flat, or
downward, you are likely to see a flatter trajectory. When it bounces, it
would not jump high, but fast and flat.
It all depends on w
K****D
发帖数: 30533
43
来自主题: Tennis版 - What NTRP level?
I think either you or me was fooled by the different camera angle.
(Of course I personally believe it's you, hehe.)
If you watch the doubles match posted by the same ID (the one who
you think is 3.0), it's at least 7.5 level. The only difference
is the camera angle. A stadium angle tends to make things look
prettier.
This "3.0" guy in blue loses to a solid 4.0 guy (aggressive baseliner)
consistently, but the scores aren't too bad. That 4.0 guy's ball
speed is obviously faster than in the other "
a*****3
发帖数: 10373
44
来自主题: Tennis版 - Why not more 4.5 & up Chinese players?
sigh, 我今年的11胜3负记录中,3负全都是你说的这种:
一个是"win some loss some",全部用反手slice到我的wild angle正手.
一个是复仇之战中,全部用反手和正手又低又平地到我的wild angle正手.
一个是playoff中,暴力正手inside out到我的wild angle正手.
其实我也没什么好方法,复仇之战中的对手,我第二次碰他时,就是特意改变打法,球球都一定要压着他打,不能给他有轻松打大角度的机会,这样才有机会.其他两个对手我都没机会再碰面.基本上就是,尽量给对手压力,这样对手想打大角度也没那么容易.要不就drop shot引他上网,然后一拍子买卖了~~

the
f*****n
发帖数: 18176
45
【 以下文字转载自 PhotoGear 讨论区 】
发信人: dogwhisper (er), 信区: PhotoGear
标 题: 溪钓白鲈兼 GoPro HD Hero 2 Camera 野外测试 (转载)
发信站: BBS 未名空间站 (Fri Sep 21 00:00:03 2012, 美东)
发信人: dogwhisper (er), 信区: Fishing
标 题: 溪钓白鲈兼 GoPro HD Hero 2 Camera 野外测试
发信站: BBS 未名空间站 (Thu Sep 20 23:56:29 2012, 美东)
GoPro HD Hero 2 review 网上有很多,就不多写了,总体感觉还不错,很适合野外爬
山钓鱼,记录每一刻惊喜。它最大的缺点是用自带的防水 housing 水下拍摄确实有臭
名昭著的不能 focus 问题(见下3,4视频),已经订了GoPro 新出的 dive housing,
收到后再做测试。还有个缺点就是野外没有电脑不能及时回放,所以如果有时候相机位
置不好拍了一天都不知道是废的, 所以 GoPro 即将推出的可以在手机上 real ... 阅读全帖
w******n
发帖数: 13172
46
偶打球的主要思路是通过深度、速度和旋转来压制对手,让对手远离底线,回球变慢,
飞行时间增加,更多出浅。这时偶就有无数办法调戏对手了,比如如果对手球出浅,偶
就侧身正手打angle winner,或者假打真放小球,或者approach+上网。如果对手月亮
球拉高拉深,偶就可能swing volley或者直接volley削低削浅同时进场打。。。
总之,要让对手出软球,远离底线。至于angle,如果不能压制对手的话,最好不要随
便打大角度,不然等于给对方机会打angle--偶肯定是跑不过对手的
w******n
发帖数: 13172
47
来自主题: Tennis版 - 奔volley和slice
你说的是效果,不是难度。而且站位比较深又比较靠中间(比如T附近)的时候,你是
很难cut angle的。这时你打发球线和边线交叉点的话,基本就等于出浅,因为没有
angle。那种球,只有离网近的时候有用,可以cut斜线。但是那个的技术难度并不是太
高,不需要主动发力,只要控制拍面角度touch一下就可以了。
作为训练,最好是偶打的这种站的深+打的深的volley,必须主动把球送深,但是还要
保持低net clearance,还不能太深而出界。拍面角度、力量、cut的angle差一点都不
行。这个练好以后,想玩别的就非常容易,只要减力稍微变换一下拍面角度就可以。
brian兄弟有一个训练就是俩人都从底线中间开始互相volley,打一拍向前进一步,直
到俩人都到网前;然后继续volley,不过打一拍退一步,直到俩人都退回到底线为止。
这个就更难了,不仅距离更远(底线到底线),而且还要前后移动,而且volley的目标
也在移动。
w******n
发帖数: 13172
48
打angle得能过网还在界内,平击打angle很容易出界。所以打angle几乎必须得topspin
。当然不一定是high topspin了
w*****g
发帖数: 615
49
agree. angle, angle, angle. not speed.
drop shot is also good to take away the pushers lane.

,
g*****y
发帖数: 7271
50
来自主题: Tennis版 - 网球步法及如何录像求助
直接转贴过来吧:
I was looking for a camera that was easy to use for shooting tennis matches.
I tried 4 others before settling on this one.
- You can shoot video with the lcd closed. (Perfect when you are doing fixed
shooting as it extends battery life.)
- I bought a wide angle lens from Amazon, "0.5x Digital Wide Angle Macro
Professional Series Lens" for $27.99 to add onto it and it works amazingly
well. You need a lens that comes with adapter rings.
- The feature that is most helpful for me is the abi... 阅读全帖
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