声学性能

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(133) / 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(155) / 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(151) / 评论(0) 分类 Scientific American(五)月

His bizarre behavior got many people's attention. 他古怪的行为吸引了许多人的注意。 bizarre是个形容词,表示古怪的,注意这单词的拼法也有点bizarre,中间有连续的两个r。

发表于:2018-12-25 / 阅读(150) / 评论(0) 分类 蒋健棠英语实用句子

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(202) / 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(169) / 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(206) / 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(142) / 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(153) / 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(201) / 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(134) / 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(163) / 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(129) / 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(170) / 评论(0) 分类 VOA标准英语2009年(十一月)

GUY RAZ, HOST: It's the TED Radio Hour from NPR. I'm Guy Raz. So most of us think we know ourselves pretty well, right? ROBERT SAPOLSKY: I'm sort of a hippie pacifist in terms of general persona. RAZ: That we're good people... SAPOLSKY: You know, I'm

发表于:2019-01-16 / 阅读(224) / 评论(0) 分类 2017年NPR美国国家公共电台8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(158) / 评论(0) 分类 2016CRI中国国际广播电台

HEALTH REPORT - Spending Up for Behavior-Related Drugs for Children By Jerilyn Watson Broadcast: Wednesday, May 26, 2004 This is the VOA Special English Health Report. More and more children take medi

发表于:2019-01-30 / 阅读(174) / 评论(0) 分类 健康与经济

BEIJING, Nov. 9 (Xinhuanet) -- Kids with a depressed father tend to have more behavior issues than those with a happy father, a latest US study shows. The study, published in the journal Pediatrics, used data from home interviews with almost 22,000 f

发表于:2019-02-06 / 阅读(148) / 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(178) / 评论(0) 分类 实用英语
学英语单词
above sb
active phospholipid
agitator arm
air filtering
alkenone
anti-lymphocyteserum
badge-cove
bridge-piece
building description system
capital of Egypt
Carapo, R.
Ceftidin
central clamping mechanism
chinnier
collective group
concentrations
cotton harvesting sled
crimmins
curve-rulers
decked
defamiliarizings
Dibetos
Dobs
dull to dull
epicraniums
facial frostbite
fan-shaped blade
farts around
folder options
fried ice-fish with scrambled eggs
geographical data
Gesta Romanorum
Haast Ra.
half-filled end-slots
heat support
Hellenising
helopus zdanskii
hetzler
huangtengsu
Inchard, Loch
initial steam temperature
inositolphospholipid
joint interruption probabilities
kegger
lacustriss
landing order
lighted beacon
lipomyces Starkeyi
Mek'et'ewa
missed called
Mojave R.
mouse a hook
muscarine type cholinergic receptor
neo fascism
non recurring sources of income
non-fault bus
nonopportunistic
nonspecific vaginitis
normal electrode
number synthesis of mechanism
passenger stateroom
permafrost subsoil
pithecia monacha
plane of optic axis
planing machines vertical
plastic coated metals
population planning
professional-looking
purchasing power parity puzzle
pus-serum
qualify for
quarterlife
related expressions
remote access tool
rightsholder
sarcoplasmic protein
satellite antenna radiation pattern
Severus
Sha Tin Hoi
shack on deck
slam against
soil mortar
solid alloy
solidus curve
source of taxation
Spirochaeta plicatilis
Stanzol
Statute of Merton
surface roughness profiling instrument
suspend trading
Thai Binh, Song
the bond of affection
translucent
transmission speed
tucky
uroscheocele
useful beam
vapourizer
whirl out of sight
wooden face
write-a-thon
x-radiations