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(124) / 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(145) / 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(141) / 评论(0) 分类 Scientific American(五)月

[00:02.33]Module 7 LOST AND FOUND [00:07.14]UNIT 3 Lost property [00:10.36]2 Listen and label the pictures. [00:15.06]1 Well, it's a big green sweater [00:19.35]and it's very old. [00:21.90]2 It's an old green sweater. [00:25.05]It's very small too.

发表于:2018-12-29 / 阅读(165) / 评论(0) 分类 外研社新标准初中英语七年级

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(164) / 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(194) / 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(161) / 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(199) / 评论(0) 分类 60秒科学

HONG KONG, Feb. 22 (Xinhua) -- Two new measures to cool the property market will be introduced to reduce immediate demand, John Tsang, Financial secretary of the Hong Kong Special Administrative Region (HKSAR) government announced Friday. The ad valo

发表于:2019-01-07 / 阅读(161) / 评论(0) 分类 英语新闻

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(139) / 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(144) / 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(189) / 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(125) / 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(150) / 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(122) / 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(164) / 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(149) / 评论(0) 分类 2016CRI中国国际广播电台

By Tendai Maphosa London 26 February 2008 The new edition of the second annual International Property Rights Index says physical and intellectual property rights are necessary for economic growth. From London, Tendai Maphosa has more in this report f

发表于:2019-01-31 / 阅读(139) / 评论(0) 分类 VOA常速英语2008年(二月)

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(174) / 评论(0) 分类 实用英语

BEIJING, Aug. 17 (Xinhua) -- China's property regulation measures have been carried out well by local authorities and speculative housing demand has been curbed, according to the results of a State Council inspection announced late on Friday. The ins

发表于:2019-02-14 / 阅读(184) / 评论(0) 分类 英语新闻
学英语单词
adp systems
alhaurin el grande
almuds
alternating series test
Antillo
ascending factor
Aunt Sally
BAP (basic assembler program)
be contemporary with
before the law
beg,borrow or steal
center value
channel characteristics
charted concession
cohabs
comanagements
complex analysis
conoscope
copper-stripping autoclave
core router
culter alburnus
cunning linguist
diagnosis by intrauterine lavage
digital intermediate
diplomatic school
echo-fathom
electric discharge
electrolyzers
electromagnetic pulley
elevating lever
emulsion type acrylic resin paint
external gland
field of view angle
file protection
flight route
forum state
free-thinning
genus philodendrons
geodesic normal
girl-like
Hacketstown
Hasborn
historic monument
imbuing with
inbound traffic
incident velocity
information-handling capacity
inner electrolyte
InsP3-R
interior focusing telescope
job-killers
Karditsis, Nomos
kuehlers
lattice gliding
level of the flexure
lime hardpan
local order
lovely and amazing
magnetic flux quantization
manganese(ii) citrate
Mayanga
merit good
microwave inspection
mixta
mode-dependent
mu-neutrino
multi-channel pulse height analyzer
one too much for
open date
out-term
permanent ventilation of tunnel
plasma mean enthalpy
pore spaces
reactor coolant pipe break
ripping up
serotas
split-phase-start motor
stellar dynamo
stochastic debugging
sun shade
svgas
sweet corrosion
synotus
take a stand against
Tarcoola
temporary silo
test executive program
th'are
the flow
thrombelastograph
two-neck bottle
tzung po
unidirectional flow of information
unprotections
videoplay
volontary
weak spiral cyclotron
wex
white pottery
wigway signal
yeast one-hybrid system