电子束

efficiency-效率,功效 elaborate -精心计划的,详尽的 elastic -橡皮圈,松紧带 elbow -肘,肘部 elderly-较老的,年长的 elect -选举,推举 electrical -电的,电气科学的 electron-电子 electronic -电子的 elegant -优美的,文雅的 element -元素,要素 elementary-基本的,

发表于:2018-11-29 / 阅读(145) / 评论(0) 分类 用mp3背四级单词

16. The coming of the railways in 1830s____ our society and economic life. A. transformed B. transported C. transferred D. transmitted economy 经济 economic 经济的 economical 节俭的 economics 经

发表于:2018-12-01 / 阅读(117) / 评论(0) 分类 新东方赵丽词汇课堂

In the square outside the British Library in London is a sculpture of Sir Isaac Newton - The first man who asked why apples seem always to fall towards the centre of the earth. Maybe they chose it for the spot because it shows a great scientist at wo

发表于:2018-12-07 / 阅读(84) / 评论(0) 分类 英文杂志-Magazine

Health Report - Mouth X-Rays and the Brain; Infected Gums Do Not Cause Heart Attacks This is the VOA Special English Health Report. A new study suggests that dental X-rays may increase the risk of the most common kind of brain tumor. However, experts

发表于:2018-12-07 / 阅读(68) / 评论(0) 分类 2012年VOA慢速英语(四)月

OK, great, we smell vibrations. How? All right? 好吧,我们闻到的是震动。怎么闻到呢? Now when people ask this kind of question, they neglect something, which is that physicists are really clever, unlike biologists. 当人们问这个问

发表于:2018-12-19 / 阅读(55) / 评论(0) 分类 TED演讲教育篇

This is Scientific American's 60-Second Science. I'm Sophie Bushwick. Got a minute? The shortest distance between two points may be a straight line, but try telling that to electrons: when current flows down a wire, these particles zig and zag, movin

发表于:2018-12-24 / 阅读(104) / 评论(0) 分类 Scientific American(九)月

Three Scientists Win Nobel Prize in Chemistry Three scientists have won the Nobel Prize for chemistry for their work to simplify and improve the imaging of biomolecules. 三位科学家因为在简化和改善生物分子成像方面的成就获得了诺

发表于:2019-01-03 / 阅读(180) / 评论(0) 分类 2017年VOA慢速英语(十)月

Ecological balance - astable balance in the numbers of each species in an ecosystem. In the ecosystem of the mouth this balance is brought about by competition and cooperation between the different or

发表于:2019-01-03 / 阅读(93) / 评论(0) 分类 医务英语

[0:0]efficiency效率,功效 [0:12.1950]elaborate elastic elbow elderly精心计划的,详尽的 橡皮图,松紧带 肘,肘部 较老的,年长的 [1:2.6076]elect electrical electron选举,推选 电的,电气科学的 电子 [1:41.1372]electronic elegant element elementary [2:36.2790]el

发表于:2019-01-16 / 阅读(168) / 评论(0) 分类 闭着眼睛飘单词 四级词汇

But this still doesn't explain why light is able to pass through glass rather than being absorbed as with most solids. 但是这还是不能解释为什么光可以穿透玻璃而不是像其他大多固体那样被吸收。 For that, we need to go a

发表于:2019-01-17 / 阅读(75) / 评论(0) 分类 TED演讲教育篇

AGRICULTURE REPORT December 17, 2002 — Irradiated Meat This is the VOA Special English Agriculture Report. The United States government has approved methods of destroying bacteria in meat by using r

发表于:2019-01-30 / 阅读(92) / 评论(0) 分类 农业与发展

A-bomb, atomic bomb 原子弹 absorption 吸收 to accelerate 加速 accelerating chamber 加速室 accelerator 加速器 synchrocyclotron 同步回旋加速器 synchrotron 同步加速器 betatron 电子

发表于:2019-02-03 / 阅读(98) / 评论(0) 分类 英文语法词汇

Early effect 厄利效应 Early failure 早期失效 Effective mass 有效质量 Einstein relation(ship) 爱因斯坦关系 Electric Erase Programmable Read Only Memory(E2PROM) 一次性电可擦除只读

发表于:2019-02-05 / 阅读(99) / 评论(0) 分类 实用英语

Background carrier 本底载流子 Background doping 本底掺杂 Backward 反向 Backward bias 反向偏置 Ballasting resistor 整流电阻 Ball bond 球形键合 Band 能带 Band gap 能带间隙 Ba

发表于:2019-02-05 / 阅读(90) / 评论(0) 分类 实用英语

As summer approaches we all enjoy outdoor activities. But with sunlight becoming more intense we should protect our skin from harmful direct exposure to the sun. 随着夏日的到来,我们都喜欢进行一些户外运动。但因为日照愈加强

发表于:2019-02-14 / 阅读(96) / 评论(0) 分类 中英双语新闻

As physicists built bigger and more ambitious machines, 随着物理学家建造越来越大、越来越雄心勃勃的机器, they began to find or postulate particles or particle families seemingly without number: 他们开始或推断出似乎永无

发表于:2019-02-17 / 阅读(59) / 评论(0) 分类 万物简史

What this means in practice is that you can never predict where an electron will be at any given moment. You can only list its probability of being there. In a sense, as Dennis Overbye has put it, an electron doesnt exist until it is observed. Or, pu

发表于:2019-02-17 / 阅读(55) / 评论(0) 分类 万物简史

Finally, in 1926, Heisenberg came up with a celebrated compromise, producing a new discipline that came to be known as quantum mechanics. At the heart of it was Heisenberg's Uncertainty Principle, which states that the electron is a particle but a pa

发表于:2019-02-17 / 阅读(58) / 评论(0) 分类 万物简史

Neutrons and protons occupy the atom's nucleus. The nucleus of an atom is tinyonly one millionth of a billionth of the full volume of the atombut fantastically dense, since it contains virtually all the atom's mass. As Cropper has put it, if an atom

发表于:2019-02-17 / 阅读(63) / 评论(0) 分类 万物简史

The Microscopic Technique Each advance in microscopic technique has provided scientists with new perspectives on the function of living organisms and the nature of matter itself. The invention of the visible light microscope late in the sixteenth cen

发表于:2019-02-25 / 阅读(85) / 评论(0) 分类 双语有声阅读
学英语单词
acanthoma tropicum
Algerian Arabic
angiomegaly
angle of zero lift
arbustive
audio tape recorder
bagent
ballin' out
boardage
building trade
cast steel underframe
cationic-dyeable modified polyester fibre
Chheu Khmau
Classical Armenian
conventional name
couturelike
decline of vital gate fire
design life goal
devil's bones
dimension forms
Dishmuk
dry cow
economic liberties
end-of-word
endorsors
farforth
fasciotome
ferrocyanide ion
flypost
Gibraltar, Str.of
girl-shy
gleyic acrisols
grader
hairweave
hand brake
high-altitude nuclear burst
hot gas generator
htrust bearing
interprocess naming convention
Japanese umbrella pine
Jewmen
joint frequency function
Judith Gap
launch release mechanism
lead leg
leather handbag
lime treatment
line-sequential color televsion
long-playing record
Lubutu
microtubule protein
minimum weight design
moscow' onarimon
multispeed clock feature
n-Chimerin
nocufenso
Nāngaon
odontocness
oil changer
one-plate press
over-drain
overmedicates
pascichnia
Perthian
phoronids
Plumelec
pneumocomosis
Polyloom
prebloom spray
proportion by subtraction
pseudocapacitive
radioactivity discharge to the environment
range-tracking
redemption national debt
reimport
reservoir regulation computation for water supply
revolving ash pan
rubidium-vapo(u)r frequency standard
SDI (selective dissemination of information)
sheet pile foundation
sheet piling
Shkotovskiy Rayon
sloughiest
spinal ateliosis
standing-on-nines
steroid hormone
sticky-taped
strato volcano
strong relative minimum
succontrary
tapman
technological progress
thala milium
therest
Tordesilos
Tracking bug
TV operating center
Uape
vasomotor tumentia
vertical natural-circulation type shell and tube evaporator
wale shore
warband