液体的表面张力

40 Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ni

发表于:2018-11-28 / 阅读(298) / 评论(0) 分类 新概念优美背诵短文50篇

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(85) / 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(41) / 评论(0) 分类 2018年VOA慢速英语(四)月

Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. U

发表于:2018-12-15 / 阅读(205) / 评论(0) 分类 新东方背诵文选

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(56) / 评论(0) 分类 2016年Scientific American(十二)月

Even as adults we still enjoy blowing bubbles, dont we? If youve ever wondered why blowing on a thin film of soapy water creates bubbles, this is your lucky day. All liquids have a property called surface tension. Take water, for example. Water molec

发表于:2018-12-31 / 阅读(54) / 评论(0) 分类 英语听力文摘 English Digest

Reduction of Your Tension Alternate tasks blocking out an entire day or week for a high-priority project increases your anxiety without boosting your productivity -in fact, you may lose perspective and focus. You need to create a rhythm to your work

发表于:2019-01-02 / 阅读(105) / 评论(0) 分类 精美英文欣赏

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(81) / 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(46) / 评论(0) 分类 2018年VOA慢速英语(四)月

EDUCATION REPORT - Ideas for Teaching Young Children By Jerilyn Watson Broadcast: Thursday, January 29, 2004 This is Steve Ember with the VOA Special English Education Report. Experts say students are

发表于:2019-01-04 / 阅读(53) / 评论(0) 分类 教育与新闻

Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ninete

发表于:2019-01-08 / 阅读(66) / 评论(0) 分类 英语小短文

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(59) / 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(166) / 评论(0) 分类 与美国小学生一起学英文第7册

白领英语晨读-131 Reduction of Your Tension 减轻压力

发表于:2019-01-17 / 阅读(89) / 评论(0) 分类 白领英语晨读

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(73) / 评论(0) 分类 TED演讲科学篇

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(48) / 评论(0) 分类 英语听力精选进阶版

Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ninete

发表于:2019-02-17 / 阅读(55) / 评论(0) 分类 双语有声阅读

It is called Russias Davos - an annual summer solstice gathering where foreign company heads mix and mingle under one roof in St. Petersburg. With the British rocker Sting playing to the crowd, the Kremlin plans it as a lovefest for financial types.

发表于:2019-02-18 / 阅读(57) / 评论(0) 分类 英语新闻

如何在托福阅读中提取句子的主干?这样即抓住了阅读的重点,也节省了阅读时间。有些同学对于分析长难句并不是那么敏感,看到句子简化题可能就会有晕头转向的感觉,在这里给大家讲解一

发表于:2019-02-18 / 阅读(54) / 评论(0) 分类 托福英语

On our last program, we learned how water bugs manage to stand on the surface of a pond: The pads of their feet resist contact with the water just like wax paper does. This allows the bug to rest on the thin film of surface tension that naturally cov

发表于:2019-02-23 / 阅读(72) / 评论(0) 分类 英语时差8,16
学英语单词
albuminoses
alirios
as many as
as one wishes
attractive fixed point
beach sand verbena
blisterfoil
Boveri
break level
built up connection
butterfly computation
calycomyza artemisiae
cast one's water
celation
centronuclear
ceratopharyngeal muscles
chlorine gas condenser
computing machine circuit
covibration
cross subsidization
cylindrical raingauge
decomposition heat
defect-host interaction
defy enumeration
detailed operation schedule
die accessories
diesel governor setting
double dentition
eclipse seasons
electric opener
ensemble effect
extra variable
family-runs
filter of graded density
fixed-pitch spacing
full wave rectifying circuit
fundible securities
gas-oriented
gate-recess
generic set
gonadopause
ground station of remote sensing
gurglet
have a cut at something
hemipterology
Hertsmere
Ilva Mare
immediate nuclear support
infraepimeron
interrealm
intervening statement
iterative search method
judgments of conviction
Kells
latori
lighting conditions
Lāliān
major intrusion
mathematical paradox
Megaphyton
Mickey 2, mickey
Mubarak
multi-variables analysis
multiplication rate eigenvalue
narrow gauge locomotive
non-geographic number
overentitled
P/T system
paw position
peloponese
peppery whisky
post-and-lintel construction
potential buyer
precision fork
quoted securities
realism now
reserved copy
rhino
scarcely at all
scarfes
sintering product
slit rod-and-wedge-type bolt
source core
stereofluoroscopy
subdiscussions
surveying logic
system of rules
take by violence
tooth-plates
total regression
traveling cableway
tropophil
turntablisms
twin-shell condenser
tylari
ulcer of cervix
uptrends
valve-diagram
Vantaa (Vanda)
war of attrition
wouling
yentred