最大分子吸水量

STEVE EMBER: Im Steve Ember. SHIRLEY GRIFFITH: And Im Shirley Griffith with EXPLORATIONS in VOA Special English. Today we travel to India by way of the John F. Kennedy Center for the Performing Arts in Washington, D.C. This cultural organization is c

发表于:2018-12-16 / 阅读(271) / 评论(0) 分类 2011年VOA慢速英语(三)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Just when you thought youd heard everything, scientists have found that the reason you can hear everythingincluding things that are very quietis because

发表于:2018-12-24 / 阅读(202) / 评论(0) 分类 Scientific American(四)月

Heres something we tend to take for granted: drop a few ice cubes into a glass of water at room temperature, and in a few minutes the water will cool. How does this work? 有件事情我们总觉得理所当然:室温下把一些冰块放入水中,

发表于:2018-12-28 / 阅读(241) / 评论(0) 分类 初学者听力文摘精选

北京奥运28大项 参与,竞争,分享,进步 Water Polo 水球 The competition shall be between a maximum of eight teams selected in the following manner: automatically the first three teams from the preceding World Championships and one team from the Contin

发表于:2018-12-30 / 阅读(201) / 评论(0) 分类 奥运28大项比赛

How Does Ice Cool Drinks? Heres something we tend to take for granted: drop a few ice cubes into a glass of water at room temperature, and in a few minutes the water will cool. How does this work? Heat is a measure of molecular activity: the faster a

发表于:2018-12-31 / 阅读(148) / 评论(0) 分类 英语听力文摘 English Digest

I once took part in a vodka tasting contest, in which participants tried to tell an expensive brand from a cheap one. I dont recall the exact outcome, for obvious reasons. But I do know that several people swore they could taste the difference. Well,

发表于:2019-01-02 / 阅读(199) / 评论(0) 分类 60秒科学

Water Blankets Forming Planets A study in the journal Science finds much more molecular water in regions where planets are forming around young stars. The mechanism to keep the water from being destroyed by UV radiation appears to involve some of the

发表于:2019-01-02 / 阅读(286) / 评论(0) 分类 60秒科学

One of these wavelengths corresponds to hydrogen, another wavelength would be iron. Another wavelength would be oxygen. And so you go to the part of the spectrum you are interested in and you see you'

发表于:2019-01-02 / 阅读(236) / 评论(0) 分类 火星生命

Facebook published detailed guidelines Tuesday for what users can and cannot post on the social media service. Earlier this month, lawmakers called on Facebook chief Mark Zuckerberg to appear in Congress. They demanded that his company take more step

发表于:2019-01-03 / 阅读(248) / 评论(0) 分类 2018年VOA慢速英语(四)月

Hyaluronic acid - the largest glycosaminoglycan known, it plays an important role of restricting the flow of water in tissues, particularly in synovial fluid where it acts as a lubricant.. Hydrogen bo

发表于:2019-01-03 / 阅读(177) / 评论(0) 分类 医务英语

A cellphone rests in its watery-grave,a distressing sight for cellphone users everywhere. But this one, isn't dead. Hello, this Alexan,thanks for calling ,welcome, how may I help you?Liquipel is a start-up company based in Santa Ana, California. It's

发表于:2019-01-07 / 阅读(191) / 评论(0) 分类 万花筒2012年

Another big story we're following for you this morning, that massive oil spill in the Gulf of Mexico. Boom! They're now being battered in the water, and one of the main lines to defense here against the Gulf of Mexico oil spill may not in the end hol

发表于:2019-01-08 / 阅读(239) / 评论(0) 分类 CNN2010年(五)月

The 2009 Nobel Prize in Chemistry goes to Venkatraman Ramakrishnan of the MRC Laboratory of Molecular Biology in England, Yale Universitys Thomas Steitz, and Ada Yonath of the Weizmann Institute of Science in Israel for their studies of the ribosome.

发表于:2019-01-08 / 阅读(230) / 评论(0) 分类 Scientific American(十)月

Last October, a NASA rocket, traveling at a speed of 9,000 kilometers per hour, smashed into a dark crater on the moon's south pole. Upon impact, the Centaur rocket kicked up a cloud of debris and elements from the moon's surface, creating a so-calle

发表于:2019-01-14 / 阅读(161) / 评论(0) 分类 VOA标准英语2010年(十)月

As liquid water, these molecules are engaged in a constant and random square dance that is called the hydrogen bonding network. 作为液态水,这些分子从事着恒定而随机的被称为氢键网络的方块舞。 Entropy favors keeping the s

发表于:2019-01-17 / 阅读(164) / 评论(0) 分类 TED演讲教育篇

Why does salt dissolve in water but oil doesn't? 为什么盐可溶于水而油却不行呢? Well, in a word,chemistry. But that's not very satisfied, isn't it? 总的来说,是化学作用。但这并不令人满意,对吧? Well, the reason

发表于:2019-01-17 / 阅读(198) / 评论(0) 分类 TED演讲教育篇

综合性商港comprehensive commercial seaport春意盎然spring is very much in the air forest coverage森林覆盖率 global warming全球变暖 principal element主要因素 toxic emission废气排放www.examw.com 迸发出心灵的火花ignite t

发表于:2019-01-17 / 阅读(189) / 评论(0) 分类 英语口译

While most Chinese bundle up in winter, some are stripping down to celebrate the frosty weather. Although the temperature may fall to minus 10 to 20 degrees Celsius in northeast China, that cant chill the enthusiasm of these winter swimmers who took

发表于:2019-02-18 / 阅读(206) / 评论(0) 分类 CCTV9英语新闻2014年01月

Angles - the lines created to the pockets between balls 角度 在球袋和球之间形成的线路 Break - a sequence of scoring shots - the number of points scored in one go 一杆球 连续击球得分,即击打一杆后所得的总分 Backspin

发表于:2019-02-18 / 阅读(227) / 评论(0) 分类 实用英语

Did you ever wonder why sugar dissolves in a cup of coffee? Why not have the sugar just float in the middle of the cup, without dissipating into the coffee? Its because of the way water molecules interact with molecules in other substances. A water m

发表于:2019-03-06 / 阅读(248) / 评论(0) 分类 英语时差8,16
学英语单词
aldie
alexandrite laser
as hard as the nether millstone
beziques
brunch
buris
cafe hop
canemaker
carnages
characteristic function of meromorphic function
chauffeured
Chello
chromato-processor
CI-440
cognatio
cooling fixture
crisomphalos
crystal accumulation
dielectric flux density
directionality effect
encarsia flavoscutellum
end file specifier
epi-wilsonine
esaf
falkland islandss
feeks
fixing fares and rates
flaming queens
florida, straits of
fluorescence chromatogram
fragilization
fuck about
garlandry
gent (ghent)
Gerdāb
german hand ball
harmonica bug
Hartford fern
head of rib
Her Maj
holed by forklift hands
homo thugs
hypomenorrheas
Ialoveni
idyllically
imperfectible
in drawing
inner basin
ionic oscillation
Kitaaizu
lateral judge
leaf weight ratio
lenses
Lipomycetoideae
love-bites
metastatogenic
midabdominal
misogamies
mizzly
moving plates
multiposition action
mummifying
nephi
normal spinel structure
obertas
oil supply pipe
osteophor
package atomic reactor
parasympathetic efferent fiber
pennorth, pennorth
pleural effusions
positive motion cam
queue manager
rabi al-awwal
rate of interchange
red lemonade
resources tax
rigidulus
sailflight
Santiago, Pta.de
scanner encoder
sequence of random variables
shamrock-pea
shift differential
side tappet
spare-parts number
special type electrical apparatus
stem grafting?
stoke hold
strutters
Stórhöfdhi
summation current transformer
swshsistses-s
Taepyeong-ni
target-date
tuna long lining
unfoldure
vestoids
warren beatty
water retaining structure
whistons
xanthidylic acid