电子枪真空密封装置

She inspected the carpet for small items. She saw a paper clip and a rubber band. She picked them up. She put them into a little box on the kitchen counter. She plugged in the vacuum cleaner. She turned on the switch. The cat ran out of the room. She

发表于:2018-12-07 / 阅读(116) / 评论(0) 分类 原版英语小短文

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(118) / 评论(0) 分类 英文杂志-Magazine

Oliver went to Target to buy a new vacuum cleaner. The vacuum cleaners at Target cost $60 to $500. The expensive ones were too bulky and, of course, too expensive. He bought the cheapest one in the store: a Dirt Devil Vibe. Its label claimed that it

发表于:2018-12-11 / 阅读(123) / 评论(0) 分类 365个英语简短小故事

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(132) / 评论(0) 分类 Scientific American(九)月

This is Scientific American 60-Second Science. I'm Cynthia Graber. This will just take a minute. The fridge is one of your home's biggest energy hogs. Better insulation can make refrigerators much more efficient. And a panel encasing a vacuum is one

发表于:2018-12-24 / 阅读(122) / 评论(0) 分类 Scientific American(五)月

【句子对照】 Hey, don't jump the gun. Listen to what he has to say before you make a decision. 嗨,不要操之过急,在做决定之前听听他怎么说。 【关键俚语】 jump the gun 英:To act too soon, before the proper time; to act on an impulse, without thinking

发表于:2018-12-24 / 阅读(174) / 评论(0) 分类 俚语口头禅

发表于:2018-12-24 / 阅读(158) / 评论(0) 分类 英语口语1+1

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(206) / 评论(0) 分类 2017年VOA慢速英语(十)月

今天我们要给大家讲解的两个习惯用语都是以

发表于:2019-01-07 / 阅读(174) / 评论(0) 分类 美国习惯用语

我们曾经讲过几个和gun也就是枪炮的

发表于:2019-01-07 / 阅读(171) / 评论(0) 分类 美国习惯用语

Top Gun Bottom line 每个人的生活道路几乎都是崎岖不平,有上有下的。当然,一般人都喜欢攀登到社会的高峰,而不愿意沦落到社会的最低层。美国的俗语和

发表于:2019-01-07 / 阅读(166) / 评论(0) 分类 美国习惯用语

[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(196) / 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(103) / 评论(0) 分类 TED演讲教育篇

CAPE CANAVERAL Two American astronauts will venture outside the International Space Station Monday to stow a failed coolant pump and extend the outpost's Canadian railway. Wearing protective spacesuits in a deadly vacuum(真空) environment, Stephen

发表于:2019-02-05 / 阅读(155) / 评论(0) 分类 英语新闻

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(122) / 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(118) / 评论(0) 分类 实用英语

我们今天要讲的习惯用语有一个共同的词: top。大家一定早知道这个词。它解释顶端。一般说来高高在上的总比压在底层的来得优越。这正反映在我们先学的两个习惯用语里: top gun. Gun是枪。

发表于:2019-02-06 / 阅读(157) / 评论(0) 分类 美国习惯用语

饶舌:Hollywood Undead - Bottle and a gun 相关介绍 :Hip-Hop,Metal,Emo,电子,混合一起是什么感觉?就是他们,Hip-hop为主,金属为辅,screamo偶来捧场.创造出了这只杰出的乐队.这是他们发行的第一张专辑. 歌词

发表于:2019-02-07 / 阅读(145) / 评论(0) 分类 节奏布鲁斯

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(92) / 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(126) / 评论(0) 分类 双语有声阅读
学英语单词
acute respiratory disease
agony aunts
androcidal
architeuthiss
ascher's syndrome(blepharochalasis - double lips)
beechgroves
berth light
bidegrees
black-leadings
boyishly
brake actuator
bseesalary
clariflocculator
closed-circuit grouting
corpuscular rays
critical rate of rise of off-state voltage
cross-channel marketing
crossposted
Danilovskaya Vozvyshennost'
decolourations
deez
demonstration plot
desert sores
developmental rate
Dimorphocalyx
diverse ion effect
driving-plate
drossed bullion
epicondylian
Erithacus
extended-surface exchanger
field intensity
fin tube wall
Fulunäs
haplomonad
homopropargyl
horizontal radiationpattern
hovey
humus sludge
hyperaccumulator
ideal operator
inductance-capacitance generator
Jayasri
kangpang
Karapata
key-to-tape data recorder
Kurovitsy
laddertron
maintenance down time
methylamino acid
molybdenum(iv) hydroxybromide
monochromatic wave
muscular adductor mandibulae
neutral species
oil-spill
optical fiber composite overhead ground wire
oxidizement
peep sight glass
persuade sb to do
priority-one
process remote control
promoter action
quick-reaction capability
reciprocal proportion law
remote readout
remunerator
report of expenditure refunds
reproducing system
retinal ischemia
return instruction
rhapis humiliss
roads
rock compression
sales strength
Sanger, Margaret
SAP ERP
saxifragal
schwt
sector of fire
Sherari
Shipbuilder association
slaughteress
slobin
stationlike
steel baseplate
steering vector
stock washer
summer dead weight tons
sweep-output amplifier
television violence
thread bare fabric
three cardinal points
totipotential
Trembleur L.
Triebel-Lizorkin spaces
troodontids
underrun a tackle
uninflammability
URSOCHOL
vacationings
vector table for multi-vector device
verbin'