功动能定理

I always connected more with New Moon. I really understood where he's coming from, and I want to get more the character which it shows in New Moon and Twilight. But it was difficult to make , you know, Everyone was worried about me, looked too depres

发表于:2018-12-07 / 阅读(149) / 评论(0) 分类 访谈录2009

Potential energy in a crossbow When we think of the concept of energy, we often think of objects in motion: a car rolling down a hill or a jogger running up a hill. This kind of energy-in-motion, called kinetic energy, isnt the only kind of energy. A

发表于:2018-12-27 / 阅读(111) / 评论(0) 分类 英语时差8,16

暂无音频 REMARKS OF PRESIDENT BARACK OBAMA PROMOTING THE RECOVERY PLAN WITH SECRETARY CHU Department of Energy February 5, 2009 Thank you, Secretary Chu, for bringing your experience and expertise to this new role. And thank you all so much for your

发表于:2018-12-30 / 阅读(171) / 评论(0) 分类 美国总统每日发言

When the wind picks up at the foot of the Rockies, there are those who believe they can hear the future. At the National Renewable Energy Laboratory, making alternative power sources competitive with fossil fuels has been a mission since the energy

发表于:2018-12-30 / 阅读(138) / 评论(0) 分类 国家地理2008年

It's a workout with two goals, mean green students are doing their bodies and the environment a favor when they hop on these machines. When you talk about energy, you think about like the windmill and there the water and other things producing energy

发表于:2019-01-07 / 阅读(123) / 评论(0) 分类 万花筒2011年

This is Scientific American's 60 seconds science. I'm Kellen Horgon. This will just take a minute. Have you ever wondered what happens to mosquitos in the rain, a raindrop is like 15 times heavier than those little suckers. So getting hit by one, he'

发表于:2019-01-08 / 阅读(152) / 评论(0) 分类 Scientific American(六)月

Many Americans are looking for new ways to save money, due to the rising price of gas. With nine out of ten Americans driving to their jobs about three-quarters of them alone in the car and many more on the road for work, one solution gaining popula

发表于:2019-01-09 / 阅读(123) / 评论(0) 分类 VOA标准英语2008年(八月)

US Agency Announces Wave Energy Prize Competition 美国能源部发起能源奖竞争 Experts say that sun and wind are the richest sources of clean, renewable energy. But ocean waves also create powerful, clean energy. So, the U.S Department of Ene

发表于:2019-01-12 / 阅读(144) / 评论(0) 分类 2015年VOA慢速英语(五)月

Why the 9 to 5 Office Worker Will Become a Thing of the Past The Natural Productivity Cycle In your personal life, when attending to business or working on side projects, how often do you spend 8 consecutive hours in front of a computer? It doesnt ma

发表于:2019-01-17 / 阅读(157) / 评论(0) 分类 阅读空间

Science and Technology 科技 Looking for the Higgs 捕获希格斯粒子 Enemy in sight? 敌军现身? The search for the Higgs boson is closing in on its quarry 希格斯玻色子的研究逼近其目标 ON JULY 22nd two teams of researchers base

发表于:2019-01-26 / 阅读(107) / 评论(0) 分类 经济学人科技系列

By Carolyn Weaver Washington, DC 09 February 2006 watch Brookhaven report Experimental results at Brookhaven National Laboratory’s supercollider that replicate in miniature the “Big Bang,” when

发表于:2019-01-31 / 阅读(363) / 评论(0) 分类 2006年VOA标准英语(二月)

美丽人生之七大秘诀 A great life doesn't happen by accident. A great life is the result of allocating your time, energy, thoughts, and hard work towards what you want your life to be. Stop setting yourself up for stress and failure,

发表于:2019-02-01 / 阅读(168) / 评论(0) 分类 阅读空间

By Daniel Schearf Irbil, Iraq 16 February 2008 Iraqi officials say they are formulating a plan to deal with the country's widespread energy shortages. Iraq is believed to have the third largest reserves of oil in the world, but years of fighting, sab

发表于:2019-02-06 / 阅读(123) / 评论(0) 分类 VOA常速英语2008年(二月)

数学常用短语与从句 Phrases or clauses frequently used in mathematics 常见的涉及运算的短语或句子 1. Differentiate both sides of the equation and we get... Integrate both sides of the equation and we get... 2. Differentiating both sides of the equatio

发表于:2019-02-07 / 阅读(149) / 评论(0) 分类 英文语法词汇

matter 物质 energy 能 vacuum 真空 liquid 液体 fluid 流体 solid 固体 body 物体 mass 质量 weight 重量 density 密度 specific gravity 比重 gravity 重力 velocity 速度 kinetic energy

发表于:2019-02-07 / 阅读(145) / 评论(0) 分类 英文语法词汇

How to Create Passion Anywhere and Anytime Remember Science class? Mr. Thatcher, sophomore year in high school, taught us about potential and kinetic energy. I was way more interested in Pam Miller, who sat perilously close to me. But on Mr Thatcher

发表于:2019-02-11 / 阅读(142) / 评论(0) 分类 阅读空间

Swinging Physics: Potential And Kinetic Energy Working Together 动能与势能相互作用 动能是所有能看到的运动的能量,包括物体的,微粒的或质点集的运动等。 势能(Potential energy )是位置的函数,例如把一个

发表于:2019-02-24 / 阅读(112) / 评论(0) 分类 英语听力文摘 English Digest

当外语学习者进入备考雅思写作这个阶段,实际上最缺的不是词汇(阅读另讲),而是如何合理使用,组合,连接自己现有的词,然后组成一篇自信的雅思学术短文。同样的家常菜材料,为什么有

发表于:2019-03-03 / 阅读(153) / 评论(0) 分类 雅思英语

Sit on a swing, let someone push you, and away you go. But what happens if the person who pushed you walks away, and you want to swing faster and higher. If you've ever been in the second grade, you know the solution to that. Just start pumping your

发表于:2019-03-06 / 阅读(235) / 评论(0) 分类 英语时差8,16

The Heat Is On 热传递,是热从温度高的物体传到温度低的物体,或者从物体的高温部分传到低温部分的过程。热传递是自然界普遍存在的一种自然现象。只要物体之间或同一物体的不同部分之间

发表于:2019-03-09 / 阅读(169) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
abjad numerals
active RC network synthesis
adequate definition
allografted
antifarmer
apical appendage
appetisingnesses
arctica
B chain
balanced steel
basaphil adenoma
bitumen solidification
bull fiddle
cement rendering
chaetoceros laciniosus
cheiroschisis
chess-game
Chërnaya, Gora
Cleanthes
Closing tag
code message
Code of Fair Competition
constant unit price
cosella fleschneri
creolists
Cyclea gracillima
decompression tap
degenerations
depth of snow cover
Dillon's Rule
Dirillo, Lago.
disodium calcium edetate
dogweary
Doppler speed log
dumbbell-shaped curves of zero velocity
editors in chief
educated T lymphocyte
entreprenetwork
equity debit ratio
exinonigritite
fact check
fideicommissaria hereditas
flat cost
foot holes
four-layer diode
Gelonium
good guys
hapten-carrier complex
Harveyan
Kekri
kill out
label printing
lavascapes
leduc
Lincoln Red
loaded impedance
magnetic allotropism
misken
moeketsis
mydas fly
mytilopsis sallei
noble gas collection
oscillation transformer
p-glycoproteins
perilobular
planktonic
play sb false
post spring
poza
pressure equalization
pycnonotus jocosus
recursive call
remote control console
reserved file type
right-clicked
San Giuliano Terme
scald-berry
scraper conveyer
Scroll Lock key
seal drain leakage
self-perpetuating
self-timing gear
semiparasitism
specification load
square peg into a round hole
sub-refraction
subterms
telegraph exchange
torsional-oscillation
touward
Tulemalu L.
two-pulse
unfair treatment
vibration-stopper gum
vsa
warning signal
warp drawing
whoos
window-seats
xanthomatoid
yiffy
yoong