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(366) / 评论(0) 分类 新概念优美背诵短文50篇

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(260) / 评论(0) 分类 新东方背诵文选

Hoverboards Ignore Gravity Can you imagine riding around the streets of your hometown on a skateboard without wheels? In the late 1980s, film director Robert Zemeckis showed a skateboard floating above the ground in his movie Back To The Future Part

发表于:2018-12-16 / 阅读(136) / 评论(0) 分类 2014年VOA慢速英语(十二)月

Under Pressure压力之下 In physics, pressure depends on the amount of force acting on a surface and on the size of the surface. The smaller the surface, the greater the pressure. Lets say that a woman steps on your toe; she weighs 120 pounds. If s

发表于:2018-12-28 / 阅读(138) / 评论(0) 分类 初学者听力文摘精选

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(105) / 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(154) / 评论(0) 分类 精美英文欣赏

By Robert Berger Jerusalem 24 September 2007 Israel is playing down tensions with its arch-enemy to the north - Syria. As Robert Berger reports from VOA's Jerusalem bureau, there are new moves to bring Syria into the Middle East peace process. Prime

发表于:2019-01-07 / 阅读(155) / 评论(0) 分类 2007年VOA标准英语(九月)

By Nick Wadhams Nairobi 15 August 2007 The government of south Sudan says dialogue with the Sudanese government in Khartoum has completely broken down and a peace deal signed in 2005 is in jeopardy. As Nick Wadhams reports from Nairobi, tension conti

发表于:2019-01-07 / 阅读(160) / 评论(0) 分类 2007年VOA标准英语(八月)

By Gilbert da Costa Abuja 19 July 2007 A popular Islamic preacher in northwestern Nigeria has died, hours after being shot near a mosque. For VOA, Gilbert da Costa reports that confirmation of the cleric's death has set residents on edge. Residents o

发表于:2019-01-07 / 阅读(144) / 评论(0) 分类 2007年VOA标准英语(七月)

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(124) / 评论(0) 分类 英语小短文

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

发表于:2019-01-17 / 阅读(148) / 评论(0) 分类 白领英语晨读

If we could flip a switch and just turn off the Earth's magnetic field, it will take about 15,000 years to disappear, based on the rate of decay of the field that we've seen over the last 150 years. It's currently decaying at a rate that would see an

发表于:2019-01-22 / 阅读(116) / 评论(0) 分类 自然百科2011年

Suspension bridges such as the Golden Gate Bridge and the Brooklyn Bridge are some of the most amazing structures on earth. These aesthetic and technological wonders span rivers, and other obstacles with enough strength to support endless streams of

发表于:2019-01-22 / 阅读(112) / 评论(0) 分类 英语时差8,16

ENVIRONMENT REPORT - September 6, 2002: Geckos and Their Sticky Feet By Cynthia Kirk This is the VOA Special English ENVIRONMENT REPORT. Geckos are small lizards that live in warm climates. These liza

发表于:2019-01-30 / 阅读(148) / 评论(0) 分类 健康与环境

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(105) / 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(110) / 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(107) / 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(123) / 评论(0) 分类 英语时差8,16

The scale is of course more an idea than an object, an arbitrary measure of the Earth's tremblings based on surface measurements. 当然,里氏震级是一个概念,不是一件东西,是一个根据地面测量的结果武断地得出的地球震

发表于:2019-02-25 / 阅读(115) / 评论(0) 分类 万物简史

Why Frisbees Fly With a gentle flick of the wrist on a warm summer day, you can launch a frisbee on a long and graceful flight. Why do they fly so well? One reason is something called gyroscopic force. This is the tendency of a spinning object to mai

发表于:2019-03-09 / 阅读(161) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
aconites
aegon
ammoninted
anode supply voltage
applicaton for bail
audio programmelink transmitter
automatic telegraphy
bermuda plans
bicylinders
busted
cecectomies
che-ild
clamp off
decision maker
desacralizes
dibenzoyl methane
differential synchrotransmitter
dimethyl-nornarcotine
diminishing balance method
documentaty bill
dodecimole
electromagnetic pickup
Faint heart never won fair lady
fasciclin
feeder tube
fermionically
fictitious peak
firestones
geomorphologies
giardinis
Gisborne L.
go to the teahouse
half-pike
high-tension condenser
i'll be there
infinitesimal strain tensor
intricate case without a clue
jack door
jumboise,jumboize
Kapiskau
kurloff body
La Bomba
Lamina lateralis processus pterygoidei
Lankesterella ranarum
learned reaction
level measurement
low-wings
macroengineering
melon aphid
mendment
Metabasaluminite
milk product
milling quality
mixture blowdown
moonshine crotch
oceanic general circulation
oneyda alvarengo (brazil)
outherod
pafs
Panacain
paties
polypentamethylene suberamide
pool-cathode
pussy
regular session
reverse position
rhuMab-E25
rocker bar furnace
Rocklea
sampling signal
semiopacity
sevenfigure
slotin
smelite
South Newport
specific endurance
sram stability projections
Strftime
sub-bottom profiler
Sudanists
sugar fatty acid ester
sulfuric acid mist
supermastergroups
Supino
tail-males
telnitz
the hair side of belt
theign
timefor
Togoville
track strengthening
travelling wave theory
trigger film
unbal (unbalanced)
unmeshed
untraist
upperclass
vena gastrica-dextras
ventilation ducting
VoIP PBX
volvae
wifey