【建筑工程】吸声顶棚

When Pablo Panda Sandoval made history with 3 home runs in game one of the world series his head was probably buzzing. But when batters in chilly Detroit had the ball not quite right in the next couple of the nets, it will be their hands that buzzing

发表于:2018-12-24 / 阅读(83) / 评论(0) 分类 Scientific American(十)月

This is Scientific American's 60-second Science. I'm Steve Mirsky. Got a minute? Can you name those notes? Probably not. Perhaps one in ten thousand speakers of European languages has perfect pitch - the ability to recognize a note without having hea

发表于:2018-12-24 / 阅读(85) / 评论(0) 分类 Scientific American(五)月

This is Scientific American's 60-second Science. I'm Karen Hopkin. If you ever got picked on in the schoolyard, you might have wished for some sort of superpower, like unbeatable speed or maybe just the ability to completely disappear. Now scientists

发表于:2018-12-24 / 阅读(86) / 评论(0) 分类 Scientific American(五)月

Scientists analyzed around 2,500 of those calls, and found that the second part (sound) is nearly identical in pitch every time from each whale: 16 hertz, or four octaves below middle C. And the slight variations in frequency that do exist are only a

发表于:2019-01-02 / 阅读(115) / 评论(0) 分类 60秒科学

Hybrid cars are good for the environment. But scientists say that they might be bad for pedestrians. Because hybrids are so quiet, it can be hard for walkers to hear them until its too late. Listen to this. [quiet car sound] Thats a Toyota Prius mov

发表于:2019-01-02 / 阅读(134) / 评论(0) 分类 60秒科学

Can you name those notes? Probably notperhaps one in 10,000 speakers of European languages has perfect pitch, the ability to recognize a note without having heard any reference note first. But theres a much better chance you could successfully name

发表于:2019-01-02 / 阅读(113) / 评论(0) 分类 60秒科学

If you ever got picked on in the schoolyard, you might have wished for some sort of superpower: like unbeatable speed or maybe just the ability to completely disappear. Now scientists at the College of Wooster in Ohio say that you might have had a s

发表于:2019-01-02 / 阅读(133) / 评论(0) 分类 60秒科学

我们讲过几个表示非常生气的习惯用语,例如像:To make one's blood boil.我们今天再来讲两个和生气有关的俗语。我们要讲的第一个俗语是:To hit the ceiling.

发表于:2019-01-06 / 阅读(110) / 评论(0) 分类 美国习惯用语

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Every year, scores of manatees are killed by boats in Floridas waters. Their plight is an ecological concern. And everyone from marine biologists to Marg

发表于:2019-01-08 / 阅读(89) / 评论(0) 分类 Scientific American(十一)月

This is Scientific American's 60-second Science. I'm Karen Hopkin. This will just take a minute. Hybrid cars are good for the environment, but scientists say that they might be bad for pedestrians. Because hybrids are so quiet that can be hard for wa

发表于:2019-01-08 / 阅读(94) / 评论(0) 分类 Scientific American(五)月

We humans are pretty good at communicating with sounds other than words. But how much of this is hard-wired, and how much do we pick up from others? To find out, researchers recorded the nonverbal sounds of people born deaf, as they responded to a ra

发表于:2019-01-08 / 阅读(86) / 评论(0) 分类 Scientific American(十一)月

Blue whales off the California coast make calls that, sped up 10 times, sound like (sound of two-part call). The original is a wall-rattling frequency too low for us to hear. Scientists analyzed around 2,500 of those calls, and found that the second

发表于:2019-01-08 / 阅读(69) / 评论(0) 分类 Scientific American(八)月

Country Music Ladies Put Men in Their Place American country music lyrics often describe women as they might appear in mens dreams. This is especially true of songs by many male artists. But the songs by Maddie Marlow and Tae Dye are different. The t

发表于:2019-01-12 / 阅读(94) / 评论(0) 分类 2015年VOA慢速英语(九)月

Boston Symphony Makes Music in Mountains When Serge Koussevitzy, the Russian-born conductor of the Boston Symphony Orchestra, opened Tanglewood in 1937, he chose an all-Beethoven program, including the Pastorale Symphony. When conductor Christoph von

发表于:2019-01-13 / 阅读(73) / 评论(0) 分类 VOA标准英语2012年(七月)

By Alisha Ryu Nairobi 18 November 2009 A U.S.-flagged container ship which was hijacked by Somali pirates seven months ago has been attacked again off the coast of Somalia. Pirates were unsuccessful in their second attempt to hijack the Maersk Alaba

发表于:2019-01-14 / 阅读(104) / 评论(0) 分类 VOA标准英语2009年(十一月)

The Tiangong-2 space lab, though adopting the structure of Tiangong-1 without too many changes in appearance, has been designed to function much stronger than its predecessor. Zhu Congpeng, chief designer of the lab, says they've focused on a variety

发表于:2019-01-19 / 阅读(92) / 评论(0) 分类 2016CRI中国国际广播电台

今天我们要学的词是glass ceiling。 Glass ceiling, 玻璃天花板,指看似无形,但实际存在的障碍。奥巴马赢得民主党总统候选人提名,使黑人总统成为可能。 For some, a black president symbolizes the smashi

发表于:2019-02-03 / 阅读(86) / 评论(0) 分类 英语每日一词

通知与确认 Acknowledgments Confirmations 通知对方接到来信Acknowledging receipt of letters1. Dear Mr/Ms,Thank you for your letter No. A-3 of 6th May, offeringus 6 UI-4 Viewdatas. We have passed it on to ourTechnical Department for their c

发表于:2019-02-06 / 阅读(129) / 评论(0) 分类 实用英语

今天我们要学的词是debt ceiling。 Debt ceiling, 借债限额。The US government hit the $14.3 trillion debt ceiling in May, 美国政府五月份达到了14.3万亿美元的借债最高限额。 美国总统奥巴马设法增加借债限额的

发表于:2019-02-18 / 阅读(81) / 评论(0) 分类 英语单词荟萃

今天我们要学的词是glass ceiling。 Glass ceiling, 玻璃天花板,指看似无形,但实际存在的障碍。奥巴马赢得民主党总统候选人提名,使黑人总统成为可能。 For some, a black president symbolizes the smashi

发表于:2019-02-18 / 阅读(75) / 评论(0) 分类 英语单词荟萃
学英语单词
acrocarpous
akee
alpamayo
alternate member
atomizing damper
bank reconciliation statement
boreah
bought sold journal
cabtyre cord
carotids
chinlon safety belt
cis-trans isomer
Clever-Clogs
cohesion energy density
controllable diffraction grating
cooperative adsorption
cord dorsum potential
covered sweets
ctf
daoists
Darbatta
Darwinism
desobligeant
diffusion coefficient for particle number density
dispossessors
dissolution
double dots
drum timing pulse
duledges
Echinorhynchus moniliformis
Eleocharis acicularis
equation of state of real gas
ethnic-cleansing
European Space Data Center
fixators
frontolysis
genus Capsella
Grass Creek
Harriet Elizabeth Beecher Stowe
hiyashi
hypercorticoioism
individual exchange participant
interference signal
interframe coding technique
International Institute for the Unification of Private Law
iWar
kollmann
lace-curtain
lemur rubriventer
link performance
lysianassoid
masersats
minimum radius of curb clearance circle
mostlings
Myobactiviirus
non harmonic oscillation
nonorange
object set
obligate thermophilic bacterium
omious
partitioned project
pattisons
photinia serratifolia ardisiifolia
pore-canal system
Posets, Pico
postindexed, postindexing
public-address systems
quadratus femoris
quodlibetic
redomicile
reinforcement filler
rock slotter
rye terms sound delivery
schmalenbach
scouting distance
secondary status
selfthinning
serica opacithorax
shionol
slip flask mould
spaed
spiroes
spurnest
straddle root
subject-oriented
sun-and-planet
supplementary illumination
tainters
take from alongside
thallium pentasulfide
the bright lights
three pole breaker
tin-free bronze
towing link
travelling furnace
triaxial test apparatus
Tuzla Burnu
unconformability
underwater navigational beacon
undrunken
winning strategy
Zinn ion source