【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(126) / 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(151) / 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(149) / 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(169) / 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(200) / 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(164) / 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(201) / 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(141) / 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(149) / 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(195) / 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(127) / 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(156) / 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(128) / 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(168) / 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(154) / 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(152) / 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(128) / 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(127) / 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(177) / 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(166) / 评论(0) 分类 英语新闻
学英语单词
actual elements
admiralty territorial jurisdiction
aforecited
air pressure probe
algatross
anal fold
antiblocking agent
anticontamination
art and part in
aveage sample number
backing cough
ballott? en avant
bearing support of agitator
bhangra
Biryukove
Bob Dylan
book reader
built-in bias
buttock getter
castanea pumilas
cervical triangle
chain lacing
chemical vapour deposition technique
choke-coupled amplifier
Chrysochou
coal gravity prospecting
coco de macaos
court debate
curioscopy
cysticercus ovis
detroiters
dichlorofluorescin
Digicor
dino-
distributed architecture
electric drainager
family bennettitaceaes
Fatehābād
food-taster
genus Oncidium
genus Passer
geometry of conformal connection
gill-bearings
high opinion
hold sway
humidified
hunting season
hyopharyngeus
intramicellar
ishikoes
isomerised
jocundry
jugum (pl.juga)
laemophloeid
lag of boiler
loco invoice
macrococcal
marble dust
meta-bituminite
mundell
musch
natalie
neutral axis (of straight beam)
opposition of moon
ordinary partnership
philomystic
Plantago media
play the hog
quasi-plane curve
queen snakes
quiet aircraft
recombinant human insulins
record stacking height
reincarnatable
requalifying
resource function
Rhisnes
scoring aid
sharp bottomed ship
Shimbirre
side-to-side vibrations
single-phase
skinn
slant-eyed
spinal fusion curete
Stelvio Pass
ten-pack
therology
thoracic indices
timing weight
tort
unquoted share
vaudaire
velocity boundary layer thickness
vernazza
vice president,vice-president
viscount horatio nelson
waterproof lining
waveguide component and device
wet sock
wrongful collision
zeedonk