声学测量

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(125) / 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(150) / 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(147) / 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(167) / 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(198) / 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(148) / 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(193) / 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

Whether you get hired for a new job, promoted, or reassigned to a new position, you will most likely have a new boss. Each time that happens, you must develop a new professional relationship with the person you rely on for direction, development, and

发表于:2019-01-08 / 阅读(152) / 评论(0) 分类 英语美文

67.Tailor's 裁缝店(上) 1.Can you make me a suit from this cloth? 2.I have this material for a suit. 3.I'd like to have a suit made with this material,please. 4.When will it be ready? 5.All right, we'll see to it. 6.Can you make this dress into a

发表于:2019-01-11 / 阅读(172) / 评论(0) 分类 英语口语每天说

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(154) / 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(127) / 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(167) / 评论(0) 分类 VOA标准英语2009年(十一月)

Measurements 测量 A: Hi Sven, can you help me? Could you hold the end of the tape measure, please? A:你好,斯芬,你可以帮我一下吗?你可以给我拉着卷尺的头吗? B: Of course, where do you want me to stand? B:当然可以,你想

发表于:2019-01-14 / 阅读(114) / 评论(0) 分类 职业技术英语口语

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(153) / 评论(0) 分类 2016CRI中国国际广播电台

Fridays are awesome. It seems I have said that before. I'm Carl Azuz for commercial-free CNN STUDENT NEWS. It is month and one day until the official end of summer in the northern hemisphere. But scientists say, worldwide, July was the warmest month

发表于:2019-02-03 / 阅读(123) / 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
学英语单词
amf alloy
anterior thalamotomy
area generation
Aulon
bailable process
bottom soil
Bulbilis dactyloides
BUMED
call collision
carpus curvus
checkstop
colimitation
coup-plotters
devanna
differential locking jaw
diffuse abdominal wall resistance
dished disk
douck
drop flue boiler
drycure
EAES
edgewise shear
equivariant estimator
execratories
four-tube camera
FPMH
gastrofiberscopy
get in a dig at sb
gobler
high open circuit voltage
hordein
horizontal composition
humphrey gilberts
island type cooking range
Karvia
kinedensigraphy
kwasi
Leuciscus
lifetables
lillis
maltmen
manifold gland
metacommunicative
minimax property
misinform
molecule conversion yield
monatepil
mushroomer
Myrna Loy
Nemosenecio
neurina
officinalisinin
orthicon
overall line equivalent
Parazet
Parker's incision
perforated panel sound-absorbing material
peroxidizes
physocephalus sexalatus
plane normal
planned maintenance system
pleas of insanity
preducer
profile projection
pseudotsuga macrocarpas
PTGC
put someone on his feet
qibli
r.w.
relief hole
reversible adiabatic flow
richets
rundown circuit
San Miguel Abajo
schoolmarm
scraping machine
second-degree erythema
shear folding
simulation performance
snubber cylinder
socio-economic
solar cell
Spanish stonecrop
sprinkler coverage
spurious whorl
square lumber
sulfonate detergent
synchronous alternater
taaningichthys paurolychnus
taenia semi-circularis
Taraxacum sikkimense
tarentula
teacher-trainer
three finger rule
tinsel yarn
toiled
trihydrocalcite
tulik vol.
uptightly
v-series recommendations
Wakde, Pulau
zinefic