有效噪声温度

12. Stop the Noise Mr. Chen is talking to his neighbor Mrs. Wang. C: May I have a word with you? W: Sure. What's the problem? C: It's about your son. I'm tired of his making so much noise at all hours

发表于:2018-11-27 / 阅读(580) / 评论(0) 分类 赖世雄中级美国英语

There are six characteristics of speech, all of which are vital to speak effectively. In this section we'll look at each of them separately. These speech characteristics are basically important to you

发表于:2018-11-28 / 阅读(309) / 评论(0) 分类 疯狂英语2001年

BY STEPHEN R .COVEEY The first habit is 1)proactivity. Be proactive. The word proactivity is fairly common in management literature, but you won't find it in the dictionary. It means more than merely

发表于:2018-11-28 / 阅读(338) / 评论(0) 分类 疯狂英语2001年

Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective functioning. Enzyme systems of mammals and birds are most efficient only withi

发表于:2018-12-01 / 阅读(352) / 评论(0) 分类 新东方背诵文选

AS IT IS 2014-05-06 Looking for Vaccines Outside the Cold Chain Hello, and welcome back. I'm Jim Tedder in Washington. Today we will help you improve your American English while giving you some new information about medicines. This is the kind of thi

发表于:2018-12-16 / 阅读(177) / 评论(0) 分类 2014年VOA慢速英语(五)月

By Melinda Smith Washington 31 August 2007 Centuries ago doctors used hypnosis to help relieve the excruciating pain of surgery. It then fell out of favor with the introduction of anesthesia. Now as VOA's Melinda Smith reports, new studies show a hos

发表于:2018-12-16 / 阅读(231) / 评论(0) 分类 2007年VOA标准英语(八月)

1. drug company=pharmaceutical company 医药公司n. 2. promotion=marketing 营销n. 3. increase=escalate=rise=go up=grow 上升v. 4. research=study=survey=investigation 研究n. 5. work=be an effective way=be useful=help=achieve=succeed=have an eff

发表于:2018-12-18 / 阅读(156) / 评论(0) 分类 雅思英语

Lesson 156 Part Ⅰ Warming-up Exercises Spot Dictation: The Temperature Check Last winter we had kind of a, uh, cold winter and I was home in bed _____ one night and listening _____ my radio. And, uh

发表于:2018-12-27 / 阅读(187) / 评论(0) 分类 英语听力入门 (全四册)

Ground - Connecting the Earth to electrical equipment with a conductor. This is done so current overloads (perhaps due to a lightning strike) can be safely diverted to the Earth. Ground Fault Circuit

发表于:2019-01-03 / 阅读(181) / 评论(0) 分类 电信英语

Wherever I drove my old car over 55 miles per hour ,it vibrated terribly, so I decided to sell it. My first customer wanted to buy the car, and I battled with my conscience over whether or not to tell

发表于:2019-01-03 / 阅读(341) / 评论(0) 分类 英汉幽默故事选读

It was the first day of school. As the principal made his rounds, he heard a terriblecommotion coming from one of the classrooms. He rushed in and spotted one boy, taller than the others, who seemed to be making the most noise. He seized the lad, dra

发表于:2019-01-05 / 阅读(279) / 评论(0) 分类 趣味英语

英文歌词: It's easy to feel like You're all alone To feel like nobody knows The great that you are The good that's inside you Is trying so hard to break through[00:29.91]Maybe it's your time to lift off and fly You won't know if you never try I will

发表于:2019-01-05 / 阅读(283) / 评论(0) 分类 音乐咖啡厅

By Al Pessin Brussels 13 June 2007 U.S. Defense Secretary Robert Gates says the NATO alliance has demonstrated that it can be effective in Afghanistan in spite of continuing shortfalls in the number of troops member-nations are providing. VOA's Al Pe

发表于:2019-01-06 / 阅读(253) / 评论(0) 分类 2007年VOA标准英语(六月)

By Jessica Berman Washington 14 May 2008 Researchers have determined that commonly prescribed triple-drug combination therapies that use old antiviral drugs are the most effective for suppressing the deadly virus that causes AIDS. The findings have m

发表于:2019-01-09 / 阅读(212) / 评论(0) 分类 VOA标准英语2008年(五月)

Some bacteria have adapted to super cold environments for millions of years. And scientists have isolated some of the essential genes that allow bacteria to tolerate their harsh living conditionsbecause these same genes might help in the creation of

发表于:2019-01-11 / 阅读(234) / 评论(0) 分类 英语杂谈

GUY RAZ, HOST: I want to ask you about this really famous Talmudic notion - actually, it might be that in the Quran as well - but this idea that, you know, if you save a single life, then you have saved all of humanity. You know that one? PETER SINGE

发表于:2019-01-17 / 阅读(179) / 评论(0) 分类 2017年NPR美国国家公共电台5月

Finance and Economics;Noise pollution: Shhh! 财经;噪音污染:嘘! Why quiet carriages don't work, and how they might be made to 让车厢安静缘何行不通,如何才能静下来? Quiet carriages on trains are a nice idea: traveller

发表于:2019-01-27 / 阅读(226) / 评论(0) 分类 经济学人财经系列

> 28 世界卫生组织关于噪音污染的报道 DATE=3-29-01 TITLE=SCIENCE REPORT - WHO Report on Noise BYLINE=Caty Weaver Start at 59

发表于:2019-01-30 / 阅读(184) / 评论(0) 分类 科技之光

Chances are youve heard or rather, not heard the effects of a noise gate, but unless youre into audio engineering, you probably didnt realize it. Ever been at a concert or listen to a radio broadcast where it sounds great when theres music playing or

发表于:2019-02-18 / 阅读(289) / 评论(0) 分类 阅读空间

PARIS, Aug. 19 (Xinhua) -- Marine scientists and representatives from the private sector and military establishments would meet at UNESCO at the end of this month to measure noise's impact on marine life, the Paris-based UN scientific branch UNESCO s

发表于:2019-02-18 / 阅读(187) / 评论(0) 分类 英语新闻
学英语单词
acetyl thiourea
Agadem
ammonoid
anthodite
arteria cerebelli inferior posterior
arts-infused
asparagus style pack
automatic stroke belt sander
bar absolutes
biased momentum attitude system
Bute Giarti
calamintha gracilis benth.
cathodic potential resistance test of coating
co-writes
compression index of peat
contortionism
detailer
Disk player
Distress Signals
distributed system atchitecture network
dumping plough
EC (error correcting)
erosion modulus isotimic line
ethyl benzoylformate
expression form
finely-honed
fluazifop
grounded counterpoise
haddows
hash-brown
heartfelt thanks
heartlikins
heelproof
helicoid spiral
holoferness
interlarded
interplaza
intra-agency
irruent
jerkwater
jutia
large data base system
libitor
live out of a trunk
Lorabid
luteal regression stage
macro-asperity
menispine
methylacryloyl
microlubricant
movable element
MSE norm
Nematodontae
Nevesisporites
non agricultural population
odorlessly
overdeepening
oxygenize
PC piston ring molding machine
physaliferous
pignolia
pistoning
powiss
President Abraham Lincoln
procedurals
prooxidants
pseudocoels
Qaysān
radiating pain
recurrent fluctuation
relative equilibrium
reserve seed method
results-based
revenue-raisings
rhamnus ussuriensis j.vass
robin's
runway (rwy)
sacral nerves
shotteries
silica sol binder
spectacle lens
spluging
squilgeeing
star trek attack
statistical methods
stemme
sycamine
taper-shank
telemetrical method
tetanized
touch tone data service
toxic pollutant
tribotested
trifunctional siloxane unit
tropon
twill-weave
uranic oxide
valeurs
wedding ring
when radiographed
winter spore
wiseasses