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b*******2
发帖数: 2121 | 2 非常感谢你的解答! 对下面这句有点疑惑:为什么这个就是可以pick up 的最小
pressure?
"So the it can pick up: a minimum sound (at 1kHz) 94-38 = 56dB"
根据定义,A microphone’s sensitivity (pressure sensitivity) is defined as
the voltage generated in response to a certain pressure input. (units V/Pa,
then converted to dB).
比如 -38dB means S=10^(-38/20)=12.6mV/Pa. 意思是对于1Pa 的pressure 会产生 12
.6mV 的电压...
好像sensitivity 的定义并没有说它和mic 能检测到的最小pressure 有何关系.
另外,我在microphone handbook里看到下面这样一句:
The cartridge thermal noise specification provides the ... 阅读全帖 |
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l**n
发帖数: 2405 | 5 At Monday health screen, I see my blood pressure is still at high
(Prehypertension) range. Then I started monitoring blood pressure
before and after runnings this week.
I did three medium long runs on Monday (10mile), Tuesday (9mile) and
today, Thursday (12mile).
I have seen a pattern that each time 2 hours after the medium long
run, systolic (high pressure) drops by 15-20mmHg, diastolic (low
pressure) drops by 5-10mmHg. Only after long runs, my blood
pressure are back to Normal range.
Hope keep... 阅读全帖 |
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L******d
发帖数: 2461 | 6 http://www.ebay.com/itm/Montel-Williams-5Qt-Pressure-Cooker-w--
Description:
Comfort food, made quick and healthier! This five-in-one cooking essential
from Montel Williams makes you a master at preparing mouthwatering, easy
meals that are good for you, too.
Enjoy better fast food. Using fast, flavor-infusing technology, this
pressure cooker combines high heat and pressure to shorten cooking times.
Meals are ready so quickly, you'll be less tempted to hit the drive-thru.
And because flavor and n... 阅读全帖 |
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w*******y
发帖数: 60932 | 7 Presto 01365 6-Quart Stainless Steel Pressure Cooker, Deluxe $15.40
Great deals!
Product Features
High-speed pressure cooking preserves flavors and nutrients
Pressure regulator automatically maintains the proper cooking pressure
Protective features include pressure release devices and a cover lock
that keeps cooker from being opened until pressure is reduced
Includes a stainless steel rack and a 64-page instruction/recipe book.
Fully immersible and dishwasher safe
Tri-clad ba... 阅读全帖 |
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j*****g
发帖数: 30 | 8 非常感谢。 已经解决了，确实是 pressure switch的问题。也是朋友指点，把inducer
和pressure switch之间的管子从inducer那里拔下来，吸了一下，听到pressure
switch那里轻微的嘎巴一声，然后重新安回管子，就工作正常了。
刚开始也是怀疑管子堵塞，把管子都拔下来，吹吸，没有堵塞。后来朋友电话说得连着
pressure switch吸，才解决了问题。
再次感谢，希望对后面有类似问题的人有帮助。
error code: 3 red lights--pressure switch stuck open, 过了一段时间以后是
error code: 6 red lights-modulating gas valve has failed. This valve will
need to be replaced. |
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m******9
发帖数: 8 | 9 If pressure switch is open, it means the venting system does not work
properly. Without venting, combustion byproducts will stay inside house.
Inducer failure or vent pipe clog and other things could cause pressure
switch open. furnace will shut down if pressure switch is open,it is a kind
of safety feature.
Pressure switch can fail too. But should assume pressure switch does it's
job and make sure vent Works fine. |
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j*******a
发帖数: 2681 | 10 Sorry I can't type chinese now.
My grandma feels dizzy for some time, maybe a couple of month.
She thought she is not feeling well since she doesn't sleep well.
Then she measured her blood pressure in the local small clinic.
She has high blood pressure 180 on the top.
Before she doesn't have any high blood pressure but developed within a
couple of month. She doesn't want to go to the hospital since her legs have
some problems.
Now she tried different drugs my mom bought for her after consulting ... 阅读全帖 |
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w*******y
发帖数: 60932 | 11 Stanley 1600 PSI 1.4 GPM Maintenance Free Pump Electric Pressure Washer
$84.00 and free shipping.
Regular $135.00, on sale for $89.00 plus coupon, BSPRING5 , for $5 off $50.
Stanley 1600 PSI:
http://www.homedepot.com/Outdoors-Outdoor-Power-Equipment-Press
Rates 4.3/5.0 which is rare for a electric pressure washer.
Stanley 1800 PSI 1.4 GPM Maintenance Free Pump Electric Pressure Washer
$119.99 and free shipping
Regular $198.00, on sale for 129.99, plus coupon, HDSPRING, for $10 off $100.
Stanley... 阅读全帖 |
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w*******y
发帖数: 60932 | 12 The Wolfgang Puck Pressure Cooker Bistro Elite 7 Quart:
http://www.ebay.com/itm/130610507557
pressure cooker in multiple colors (black, green, red, white) is $40
shipped at eBay. There was a similar deal at eBay last month, but those were
for refurbs. These are new (listed as overstocks from HSN, so they come in
the HSN box) and come with a one year warranty.
Another note (since I found it difficult to find) that this will go to 12psi
. Many recipes call for 15psi, but you'll see reports that ... 阅读全帖 |
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E********t
发帖数: 2447 | 13 Troy Smith can't handle pressure. In his first game facing real pressure,
Troy Smith folded up like a lawn chair. He completed 4 of 14 passes against
Florida with an Int and an untimely fumble. Smith didn't look great -- he
didn't even look average -- he looked rattled and impotent. Troy Smith can't
handle the pressure.
Brady Quinn, despite facing that type of pressure all year, never looked
that discombobulated.
Peyton Manning can't handle pressure. Against the Ravens with their entire
season o |
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d********3
发帖数: 7220 | 15 学习了，从tirerack看到的
http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=13
The term "blowout" is generally used by drivers to describe a bursting tire
accompanied by a rapid loss of air pressure. While one might assume that all
blowouts are caused by too much internal pressure bursting a weak spot in
the tire, the main reason for them is just the opposite. Most blowouts are
caused by too little air pressure allowing the tire to flex beyond its
elastic limits until it overheats to the point w... 阅读全帖 |
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m*******1
发帖数: 58 | 17 Goodman gas Furnace 2004年安装
现买的房子的第一个冬天。前几天可以正常使用。
现不能启动，主板B14933241显示2 flashes,
故障是"Pressure switch stuck closed"
将Pressure switch 和induce motor中间的塑料管断开
或者将Pressure switch上的两根电线断开一下，都能正常启动达到设定的温度，
但温度降低后，又无法启动，只有induce motor在转动。
mechanical venting system出风口检查，没有堵塞。
正常启动后，出风口热风很大。
condensate draining也清理了，现在是干的。
换了新的Pressure switch还是同样的问题。
请问需要换新的induce motor吗？
还有哪些部件可能有问题？
谢谢。 |
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m*******1
发帖数: 58 | 18 谢谢dealseaker和imore提供的信息。
对不起，前面提供的信息表达可能不是很清楚。
1),尝试了新的pressure switch，故障依旧。
新的和旧的pressure switch用嘴吸都能听到滴答的声音.
2),主板上的黑盒子敲了敲，同样的问题还在。
3),inducer马达只有在室内温度低于设置温度时候才启动，但是无法启动furnace.
只有将Pressure switch 和induce motor中间的塑料管断开，或者将Pressure switch
上的两根电线断开一下，才能启动furnace.
现在的问题，是不是只有尝试换主板？
谢谢 |
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f****t
发帖数: 15913 | 19 去年让plumber换了个新的pressure regulator，过了一年现在开sprinkler后，喷水象
尿尿，喷不原，把sprinkler关了测水压，是70PSI，把sprinkler打开测，跌到20 PSI
，家里开一个水笼头，水压会降10PSI，家里用水和sprinkler用水是在pressure
regulator之后分叉的，这应该是pressure regulator的过滤网堵了吧？
这个东西是装在地下的，清洗过滤网或换pressure regulator都要挖大坑，有什么一劳
永逸的解决方案吗？ |
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d********1
发帖数: 8969 | 20 Googled, but not sure it's right.
Adjust the pressure in all the tires in the same way. (Note: If the tires
are warmed up, inflate the tire pressure to 3 psi over the specified amount.)
Recheck the tire pressure with the digital gauge. If the pressure is too
high, press the gauge down just far enough to release some air from the tire
. Check it again.
Replace the valve caps on all the tires. |
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c**********a
发帖数: 6 | 21 Effective application of dendrimers in the field of ultra-low pressure
reverse osmosis membrane.
Dendrimer-based ultra-low pressure reverse osmosis membrane can effectively
retain a variety of salts, such as sodium sulfate, sodium chloride,
magnesium sulfate, retention rate reaches 92%, in particular sodium sulphate
, up to 98%. The membrane has high flux, and low operating pressure. Water
flux can reach 30-40 L • M-2 • h - 1, operating pressure was 0.
6MPa. The film has good resista... 阅读全帖 |
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w********n
发帖数: 712 | 22 车子一后轮突然没了AIR PRESSURE，达人解惑
刚刚SERVICE了一月，30K MILE，3年新车，RUN FLAT TIRES。昨晚，一后轮突然没
了AIR PRESSURE，用GAUGE测下，只剩了8PSI，奇怪的是为什么其他三个TIRE的AIR
PRESSURE正常，去了GAS STATION用AIR PUMP输了AIR后，现在没有异常。这是怎么
回事啊？ |
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j****3
发帖数: 48 | 23 2001 Dodge Intrepid 2.7L. 车的空调一直都不好，今天让人看了一下，说是空调的
low pressure line leaks,需要买个新的换上，可是网上找了半天，似乎只有pressure
line, 不分high还是low,倒是其他的cap, hose是分high/low pressure.哪位大侠给指
点一下吧，谢谢 |
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A****T
发帖数: 384 | 24 刚才又看了，发现仪表盘上还有另外2个 symbol，手册上说分别代表：
low engine oil pressure warning 图案是壶嘴漏油
malfunction/check engine indicator 图案是check字样
low tire pressure warning 图案是（！）
今天开了20多分钟，那个3个符号，一直显示着。我该怎么办？会不会车开到半路就走不动了咋办？自己每天去油站打气，要注意什么？
谢谢大家出主意。
low engine oil pressure warning 意味着什么？是需要往哪个部件加油？我知道一般加regular gas那个箱是满的。
不知这3项在一起严重不？明天还能再开22分钟吗？（去学校上课的来回）
想下午再去加油站给车胎充气30psi。 面对仪表盘，是左上角显示（！），那就意味左
前胎漏气？？？
可是我目测了一下，4个轮胎看起来一样啊，不知是哪个瘪了？
谢谢大家指点！！！ |
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x*****i
发帖数: 5035 | 25 高速上面，tire pressure light 亮了，但是在LOCAL上开, 灯又不亮，是什么原因？
我把车开去GARAGE，他们检查了轮胎PRESSURE，说4个轮胎一样的pressure，但是开出
来以后一上高速，灯又亮了 |
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C*******d
发帖数: 15836 | 27 基本不可能。如果要达到pressure wash同样的效果，pressure wash一天估计刷子慢慢
刷洗得一个月。问题是你几乎不可能达到pressure wash同样的效果 |
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d**********0
发帖数: 13081 | 28 AR Blue Clean 1,600 PSI 1.58 GPM Electric Pressure Washer (AR112) $70 + Free
shipping to store
Buy Now ►
I bought this item
Ace Hardware has AR Blue Clean 1,600 PSI 1.58 GPM Electric Pressure Washer (
AR112) for $70 + free shipping to store [store locator]. Thanks bluking
Price Research: Our research indicates that AR Blue Clean 1,600 PSI 1.58 GPM
Electric Pressure Washer is $31 lower (31% savings) than the next best
available price from a reputable merchant with prices starting from $101.... 阅读全帖 |
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j******p
发帖数: 8333 | 29 刚买了个pressure washer,用起来倒还顺手。但是有个问题，每当engine stands by的
时候就会每隔几秒钟发出一种轰轰的声音，不知道是engine在build up pressure，还
是有问题？
第一次用pressure washer,也没办法对比。
上来看看有没有人知道答案？ |
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m******9
发帖数: 8 | 30 That cap is the run cap for indoor blower. Indoor blower failure should not
trigger pressure switch open.if you are sure vent pipe is clean, you can
bypass pressure switch (short out) and check if Inducer (vent motor)stay
running. Sounds like Inducer stop run when get warmed up.either Inducer or
pressure switch is the culprit.
Don't force unit run without venting, toxic carbon monoxide may accumulate
inside house. |
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p******e
发帖数: 17163 | 31 去年Boiler的low water cut off坏了，找了个师傅来修，他说那东西没用，有点灰尘
就坏。就把那东西直接拔掉了。我问他危不危险，他说不会。今年开了暖气，总感觉
boiler pressure太低，大致都在4-15 psi中间。但是现在暖气还能用，又不想再去找
人。不过又怕会不会爆炸，但是照常理推断，low pressure应该不会爆炸吧，爆炸的都
是high pressure吧 |
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d*w
发帖数: 384 | 32 poor response to blood pressure drugs adds it to the suspicion of secondary
hypertension.
bring her to a real specialist working on hypertension. many of the common
causes of secondary hypertension can be detected by detailed history taking
and physical examination. but it would be hard for just us talking without
seeing the patient.
but let me know what her blood pressure levels were before this hypertension
occurred.
the blood pressure goal in secondary hypertension will be different from
that... 阅读全帖 |
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v*****r
发帖数: 2325 | 34 heard at address, grip pressure is 5 in a scale of 1-10.
i figure this pressure remain during backswing, and early stage of downswing
, until 9 clock position.
then grip pressure increase during impact zone, to square club face and
impart speed to ball.
not sure about follow tho stage, should no worry, as long as you hold on
the releasing club. but it's better to hold your left wrist firm...
according to brian gay's coach, something you do in follow tho would have
some effects, because "u |
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C*******r
发帖数: 10345 | 35 你别说，痢膊肉还真做了，暂时禁高压锅：
Williams-Sonoma Pulls Pressure Cookers Off Shelves in Massachusetts
Following the Boston Marathon bombing last Monday in which pressure cookers
were used for the explosion, the cookware giant has decided to temporarily
stop selling the items in their Massachusetts stores.
By Robert Rosen Email the author April 22, 2013
http://dedham.patch.com/articles/williams-sonoma-pulls-pressure |
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u*****d
发帖数: 1009 | 36 Diovan Hct is a combination blood pressure medication (Diovan +
hydrochlorothiazide). So basically the doctor kept the diovan dose the same
while increased the dose of hydrochlorothiazide.
I don't know what your dad's usual blood pressure readings are, so I can't
comment on what stage of hypertension he is in right now. I'm guessing the
doctor wanted better control of his blood pressure (probably the reading
taken at his recent office visit was a little bit high?), so the doctor
doubled the HCTZ |
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w*******y
发帖数: 60932 | 38 Omron BP791IT 10+ Series Upper Arm Blood Pressure Monitor, Black/white,
Large $71.37 with a free $10 Amazon gift card for a net cost of $61.37 with
free shipping. Just scroll down to click on add both to cart.
Link:
http://www.amazon.com/gp/product/B004H44GB4
Special Offers and Product Promotions
* Receive 1 $10 Amazon.com Gift Card at no additional cost when you
purchase 1 or more Qualifying Items offered by Amazon.com. Here's how (
restrictions apply)
The Omron 10+ SERIES upper arm home bl... 阅读全帖 |
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w*******y
发帖数: 60932 | 39 1500-PSI AR Blue Clean Hand Carry Electric Pressure Washer (AR118) $69 Free
shipping from Home Depot1,500 PSI/1.50 GPM
Automatic safety valve with pressure shut-off at pump head
Three axial-piston wobble-plate pump
Tempered stainless steel plungers
30-Foot power cord/20-Foot hose
1500-PSI AR Blue Clean Hand Carry Electric Pressure Washer (AR118):
http://www.homedepot.com/webapp/wcs/stores/servlet/ProductDispl
$69
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D*****r
发帖数: 6791 | 41 这次很可能又是伊斯兰极端主义者干的。
据说Al-qaeda相关的inspire杂志上2010年登过pressure cooker炸弹的文章。
2010年时代广场上那个车里没爆炸成功的炸弹就包括了一个pressure cooker。
不过也可能是其他人故意误导栽赃。 |
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l****z
发帖数: 29846 | 42 Pressure for a European Union plan to recapitalize Spanish banks intensified
Thursday after the Fitch Ratings agency lowered its investment-grade rating
on Spain by three notches, saying European policy missteps have aggravated
the country's economic and financial challenges.
Spanish Prime Minister Mariano Rajoy said his government would wait for the
completion of assessments of the country's banking sector before disclosing
an estimate of potential capital needs.
Meantime, key European leaders ... 阅读全帖 |
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l****z
发帖数: 29846 | 43 LT. COL. RALPH PETERS: What we have here is very, very clear, it's damnably
clear that the White House which doesn't understand why this is a big deal.
I mean, he just deserted, right?Wouldn't anybody do that? And they just want
to protect the president. And they are pressuring the Army, pressuring the
Army to whitewash this. And they don't understand that for the military,
those who went before, retirees like me, those on active duty, this is a
powerful matter, as you heard from the young soldi... 阅读全帖 |
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h******i
发帖数: 1941 | 44 0. 车的问题（97 GEO Prizm）
我的动力方向盘漏油越来越严重，要1周最少加满一次油。想到还要开3年左右呢，这么忍着也不是办法，就决定修！goodyear一查，说pump，rack, pressure hose都漏。全修要1300刀！我问他是不是都有必要修，回答说yes，因为漏的严重，他实在分不清那里漏了。我觉得修车铺有些rip me off的意思，就走了。回来一想，1300的估价，到别的修车铺花费怎么着也不会少于1，2百，还不一定就是那个毛病，而且对修车也有点感兴趣。当时就下定决心自己修了。
想换一个朋友推荐的修车铺去查查毛病在哪，结果那天是周五，人家都没空，让我下周二来（赶上labor day）。周二早晨9点到了修车铺，mechanics 一看，说pressure hose 肯定漏，其他地方要等修好了hose再看看。修hose一共170。OK，看来hose一定有问题了。那个mechanics开始说要下午2点左右才能修好，我就说我不能等那么久（实际是我不想到你这里扔钱）。他一听我要走，就说我看看我们这儿有没有件儿，然后打完电话后说现在就能修，很快就好了。我说我没有时间就跑去 |
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m*********0
发帖数: 39 | 45 My 2002 Mercury Sable driver's manual mentions that "Adjust tire pressure to
recommended specifications found on the Certification Label located on the
driver's door panel. " Unfortunately there is nothing on my driver's door.
Haven't I looked for the wrong place?
Also I tried to find some information online. But nothing useful was found
at all except some body said the proper tire pressure related to your car
load :-( Well I am lazy and just need a figure. Is there anybody know the
proper tire |
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a*******l
发帖数: 98 | 46 00年的buick，最近换完机油后，偶然发现oil pressure读数不正常了。DIC数字显示恒定
保持在128-129PSI（熄火后变0）。一家车行检测结果是oil pressure sensor failure
，换得话一共 190多刀（parts 127刀）。请问大侠们，是否肯定是sensor的问题？这
个sensor是否必要修，坏了的话是不是机油不足就不会报警了？多谢！ |
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d****b
发帖数: 346 | 47 1。pressure line漏的情况确实不常见，一般接口漏比较多，搞清楚具体情况再说。
2。high/low pressure hose多数是橡胶的，而line一般是金属的。你要找那个告诉你
哪漏的问清楚。
3。你找的人怎么诊断出是哪里漏的？一般方法是用有颜色的r134a或带uv下发光的加进
去检查，即使这样有时也不容易看到，还要有专门的加压等设备。我很怀疑你找的人如
何发现哪里漏的。
4！即使是知道哪里漏了，你也不可能就买一个直接换上，空亚机在pag oil和r134a的
作用下，只要一点水蒸汽就可以很快被锈蚀。换这个管还不如就直接加r134a，不够了
再加。否则你要有明后年换compressor的觉悟。 |
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e*******l
发帖数: 1269 | 48 http://news.consumerreports.org/cars/2011/10/stop-sale-and-reca
The recall affects 159,884 Jetta TDI sedans and SportWagens manufactured
from May 2008 through September 2011 and VW Golf TDIs manufactured from May
2009 through September 2011.
According to online reports, the pulse of the injector operates at the same
frequency as the natural resonance of that injector line, causing it to
become fatigued and fail. The resulting fuel leak can lead to an engine fire
. The injectors in these common-r... 阅读全帖 |
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l*******1
发帖数: 314 | 49 今天去discount tire 换了2 个轮胎， 他们把两个新轮胎放在后面， 两个旧轮胎放在
前面。 4个轮胎的压力都设到35. 但是车子开1迈左右，tire pressure 的灯就会亮。
请各位帮忙看看咋回事？
换轮胎前没有tire pressure 灯的问题。 还是换轮胎的时候， 他们碰过sensor了？
谢谢！ |
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h**********r
发帖数: 2284 | 50 It's just that the pressure of the tires is decreased in cold weather. Don't
worry about it and you don't have to do anything about it. BMW just has
many sensors to report the weather changes. When it's getting warmer, the
pressure gets back to normal. |
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