液面声全息;液面声全息术

The northeast just had its first big snow of the season. Meanwhile, on Titan, it was foggy. That weather report brought to you by researchers publishing in the journal Astrophysical Journal Letters. The scientists found that Titan, Saturns largest mo

发表于:2018-12-02 / 阅读(167) / 评论(0) 分类 Scientific American(十二)月

NASA's Juno Spacecraft Shows the Makeup of Jupiter Scientists are finding that the inside of Jupiter is just as interesting as the part of the planets atmosphere that we can see. At the center of the planet is a liquid mixture of the elements hydroge

发表于:2018-12-08 / 阅读(114) / 评论(0) 分类 2018年VOA慢速英语(四)月

When you spill a liquid on the ground, it splashes. But if youre a guy using a urinal, or, more important, if the liquid is dangerous, say, an infected blood sample, you want to limit splashing. In other words: If an accident happens, you want the dr

发表于:2018-12-24 / 阅读(115) / 评论(0) 分类 2016年Scientific American(十二)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

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

Fog Found on Saturn's Moon Titan A study in Astrophysical Journal Letters reveals that Titan may be home to the familiar atmospheric condition known as fog--but made out of methane. Karen Hopkin reports The northeast just had its first big snow of th

发表于:2019-01-02 / 阅读(153) / 评论(0) 分类 60秒科学

NASA's Juno Spacecraft Shows the Makeup of Jupiter Scientists are finding that the inside of Jupiter is just as interesting as the part of the planets atmosphere that we can see. At the center of the planet is a liquid mixture of the elements hydroge

发表于:2019-01-03 / 阅读(114) / 评论(0) 分类 2018年VOA慢速英语(四)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(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

This could be the most terrifying sight in the solar system: clear skies above a bottomless pit, an infernal drop into the depth of Jupiters endless sky. You may have raindrops evaporating into the hot interiors of Jupiter, but there is no ocean down

发表于:2019-01-08 / 阅读(135) / 评论(0) 分类 自然百科2012年

Mantle 地幔 We are living on the surface of the Earth. 我们生活在地球表面。 So, what is inside the Earth? 那么,地球内部是什么? There is a mantle under the surface of the Earth. 地球表面以下是地幔。 The mantle takes

发表于:2019-01-10 / 阅读(235) / 评论(0) 分类 与美国小学生一起学英文第7册

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

A few months ago the fairy tale came true. 几个月前,童话故事成真了! We announced to the world that we know what these streaks are. It's liquid water. 我们向世界宣布,我们已经知道这些条纹是什么了。是液态水。

发表于:2019-01-18 / 阅读(148) / 评论(0) 分类 TED演讲科学篇

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

We might not be alone in the universe. Actually, it may be confirmed as a very crowded place by new computer models developed to help identify habitable planets. Estimates of places that can sustain life have been based on the likelihood of them havi

发表于:2019-02-13 / 阅读(104) / 评论(0) 分类 英语听力精选进阶版
学英语单词
accelerator urinae
accounting computerization
aelurophile
after-deck
agonizant
airborne contamination
allyl chlorocarbonate
alveolar channel
anastaticas
angle addendum
artsycraftsy
bank protection works
barcoes
bleen
bubble cap plate
bum bags
butyrylcholine esterase
cadmiferous
calochromus subparallelus
caterpillar belt
Cattell, James Mckeen
circular pavilion
columbo
composite pattern
concurrent execution
countlessness
cylindrical plug gauge
demagogs
enclosed pasture
epiparasites
eraldo
ethyl methyl phenylglycidate
Ethylimidazolate
Eugenie
faciculation
fascial flap
fluoride slagging
flutonidine
fudgesicle
fussies
gastrocoele
gelsinger
glams
guiding hole
hollow pyramids
hydroxyapatite
Jacobian elliptic function
keep something quiet
kiddywinky
knowes
lbav.
Le Lavandou
leptobryum pyriforme
local port surcharge
lomaxes
low active program counter carry-out
lydane-sachs-teller relation
manipulating industrial robot
mappists
meetmoi
mince(d) pie
multiple declaration
musculite
nick-nackery
nine-fifteen
ortho sulphate
oversaturated vapour
pairle
permutite precipitator
Picodnaviruses
piggyback liver transplantation
porras
qiuet speed
radegund
radiosensitiser
research and development people
retextured
retreatful
reverse ratio rubber
Roja
sending entity
ship navigation
sight-shot
studyless
submerged launch
swirl nozzle
synoscotomy
terminal radiation program
terraciano
the American War of Independence
the peak of flow
thunder-head
to nail
typhoprotein
unified file access system
urinary catheter
Venndiagram(s)
ventriduct
warking structure of population
western black-legged ticks
width of jet
wood sheathing