【声学】音质,音色

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(93) / 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(101) / 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(105) / 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(134) / 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(149) / 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(128) / 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(157) / 评论(0) 分类 60秒科学

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(100) / 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(109) / 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(116) / 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(87) / 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(113) / 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(94) / 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(125) / 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(114) / 评论(0) 分类 2016CRI中国国际广播电台

We are responsible to replace the defective ones. 我们保换质量不合格的产品。 It's really something wrong with the quality of this consignment of bicycles. 这批自行车的质量确实有问

发表于:2019-02-01 / 阅读(112) / 评论(0) 分类 实用英语

The goods are available in different qualities. 此货有多种不同的质量可供。 Nothing wrong will happen, so long as the quality of your article is good. 只要商品质量可靠,就不会发

发表于:2019-02-01 / 阅读(94) / 评论(0) 分类 实用英语

BEIJING, June 7 (Xinhua) -- Disputes regarding the quality of Beijing's air have sparked criticism against the Chinese government for allegedly dismissing its responsibility to provide a better environment. The U.S. embassy in China releases hourly a

发表于:2019-02-04 / 阅读(92) / 评论(0) 分类 英语新闻

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(141) / 评论(0) 分类 实用英语

BEIJING, Jan. 28 (Xinhua) -- China lacks quality environment assessment agencies, according to a government report issued on Monday. The Ministry of Environmental Protection (MEP) publicized a report after a three-year survey into the country's envir

发表于:2019-02-07 / 阅读(119) / 评论(0) 分类 英语新闻
学英语单词
active center
aerosol analyzer
amphocortin
anicut, annicut
ankinovichite
aquamassages
aristadiplodia pini shirai
azerin
base packer
Bir, Bîr, Bi'r, Bīr
blackwaters
Borgoforte
car deck
centre shovel
Cervaro, Torrente
cesr
chargeand
clap-dish
code number to identify account
codetermines
Dimidin-R
double-stranded DNA
ecr
electro-cutting machine
emarginated tail
entrance relay
ethylephedrine
factorial design
feasible basis
fertilizer disk
feudalize
Fiscal Year-End
fixed frequency oscillator
fly on the coachwheel
foraman
Gennari's line
gim mechanism gim
god-knows-what
hollow shafting
hook stock
human paleontology
Hyperleucinemia
idling jet
Inami
interconnecting ductwork
international film and television festival of new york
intraarticular sternocostal ligament
jaffle
keffekilite
khakham
kloepfer
Kobarid
linear diffuser
liquid poison injection pump
material interest
mazio
Mellenville
minicomic
misselects
Modem card
multi-jet blowpipe
nonelectric
overproduction of commodities overstore
palmless
parts catalogue
Penicillus-mycosis
petricca
pilot bread
piston plunger
pulpal wall
radio frequency polarography
rail ex
recovery airfield
rent-boy
run one's eye s down
sacajaweas
sattle
second-place finishes
sicket
Silicon Hills
single engined aeroplane
skelecton
spectral bands
spike drawing winch
spray dome
stage spinning
straightforward signalling
Swedish block
tandem queues
tetralemmatic
tossing wave
trombase
uniq
unselects
untranscendental
v-jointed
valley load
vapo(u)r compression cycle
welding by induction heating
Whiteadder Water
wicket mark