隔音构造

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(388) / 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(482) / 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(438) / 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(500) / 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(456) / 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(465) / 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(466) / 评论(0) 分类 60秒科学

By Kane Farabaugh New York City 10 September 2007 Ground Zero construction It is some of the most controversial real estate on the planet. The 16 acres of land in New York that is known as Ground Zero draws hundreds of thousands of visitors each year

发表于:2019-01-06 / 阅读(501) / 评论(0) 分类 2007年VOA标准英语(九月)

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(444) / 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(404) / 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(520) / 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(402) / 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(466) / 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(379) / 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(422) / 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(455) / 评论(0) 分类 2016CRI中国国际广播电台

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(487) / 评论(0) 分类 实用英语

BEIJING, May 6 (Xinhua) -- The Chinese government has established a goal of having green buildings account for 30 percent of new construction projects by 2020, according to an official document released Sunday. The document, which was jointly release

发表于:2019-02-08 / 阅读(458) / 评论(0) 分类 英语新闻

Construction of new economic zone starts in W China YINCHUAN, Oct. 20 (Xinhua) -- The construction of a new economic pilot zone, the first of its kind in China's inland areas, has started in the country's northwestern Ningxia Hui Autonomous Region. A

发表于:2019-02-11 / 阅读(497) / 评论(0) 分类 英语新闻

BEIJING, Jan. 11 (Xinhua) -- China will continue its regulation of land supply for housing use in 2013 to promote the stability of land market and healthy economic growth, a senior land and resources official said on Friday. Xu Shaoshi, minister of l

发表于:2019-02-18 / 阅读(466) / 评论(0) 分类 英语新闻
学英语单词
air fuel ratio control
alister
apogonia formosana
autoactivation
azimuth disc
back stopper
be at low-water mark
bissetts
blet aerator
boiled bed dryer
Brewster Sessions
bulby
capital nature
carl nielsons
CEID
certainty decisions
chronic iridocyclitis
cigarette boats
coefficient factor
combined prophylactic
controlled mercury-arc rectifier
coordinately repressed enzymes
Corchoropsis crenata
Corporate vision
dark-eyeds
debuccalization
DFB laser
dichroic layer
dipslopes
dynamic ratio
electric radiant heating
electride
exobasidium gracile (shirai) sydow.
Fargesia nitida
Gemonil
genus pinctadas
gets-in
glutathione transferase
grain clearing fan
hagatalite
hilar dance
hudson seals
hybrid plasmid
hypobasidiums
in a given jurisdiction
in whack
independent-manual operating mechanism
induction course
irresistible cause
isodextrosamine fructosamine
just for the hell of it
Kunshun Dan
lagrange multiplier (lm) test
libido
linear servomechanism
lobophora variegata
local elevator
logical link
logical unit connection test
Longhorn Server
lovedom
make my peace
marketing economics
melodeath
Mendeleev weighing
middle atlantic
Mφre og Romsdal Fylke
Nonnus
opticociliary neurectomy
overson
pacios
paint striker
Pellionia macrophylla
perpendant
phenobarbital sodium
Phoebe hainanensis
pigeon fancier
pilfer-proof
Pleioblastus hsienchuensis
poor workmanship
premere
proportional type control
prostrate habit
pseudo register
re-awakenings
reclamation land
record medium
rigmarolish
seesters
sentencing policy
shrinkest
smelt dissolver
speculative capital
stare out of
surveying marker
the first generations of inbreeding
timeless observation
to spend a penny
toughening furnace
tritional
Vengurla
wafer sort