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
-opic
a nightie
akekee
all right for
all the mode
anathema maranatha
angiocholecystitis
Anstey
area redevelopment program
argentum cyanicum
atlantic period
backleys
Badigeru Swamp
bake ware
be as old as the hills
beitrag
bistropha
bonus and welfare fund
Brandenburg, Land
britneys
building area quota
cafe societies
capitophorus montanus
cataracts
characteristic fossil
Claveyson
cockbulge
commercial agent
commodities markets
convergence factor
cuvette adapter
darlie
decanter
deplete
destruction effect function
diastatical
dichondra repens forst
double-stream tube
drawerline
dumb antenna
electric-arc welding apparatus
fall-off analysis
feathery structure
fiber-reinforced plastic
Flaminius
flash-light
functional macro
gas-solid adsorption
Haradah
hot milk
infectious cirrhosis
jactatio
key sensitivity
keyboard programming unit
l'imitation
labradford
languagers
lasockis
lattice gas model
ligature forceps
maho
Mazaef method
mean annual water level
mean low-water lunitidal interval
microcelebrity
monopulse secondary surveillance radar
multifoetation
multigravidity
noncommutative principal ideal ring
novelty siding
nucleus band
oecanthuss
Otway Range
overdrafts on current account unsecured
paper-ballot
parallel-plate counter
prescots
promenaders
pylie
Quang Ngai
quick-and-dirty compiler
rattlers
refinder
roller shearing machine
root kill
Rubia alata
sabeline brush
secondary mullite
shitshow
single-piece microcomputer
sintering warpage
sloths
source of stress
spiffy
structural remedies
subaxial
take ... on the chin
think one is the whole cheese
trihydric
tuition-fee
victimologists
wardening