[电子] 磷砷化镓光电阴极

The cosmetics [00:01.04]妆海沉浮 [00:02.09]Across all cultures,across all centuries,we've painted our bodies,marked our faces with ochre and ashes,mascara and rouge. [00:08.03]跨越不同的民族,历经不同的年代,我们一直在身体上

发表于:2018-11-28 / 阅读(332) / 评论(0) 分类 零距离李阳疯狂英语口语

Being old is when you know all the answers, but nobody asks you the questions. (Anonymous) Six months before she died, my grandmother moved into an old people's home and I visited her there when I was in Britain. She was sitting in the living room wi

发表于:2018-12-07 / 阅读(179) / 评论(0) 分类 英文杂志-Magazine

Experimental Treatment Targets Drug-Resistant Bacteria You probably have heard about the Trojan Horse. Tradition says the ancient Greeks used a large wooden horse to trick enemy forces and capture the city of Troy. Now, researchers say a similar plan

发表于:2018-12-08 / 阅读(176) / 评论(0) 分类 2018年VOA慢速英语(十)月

The little splints of wood which we call matches are made out of deal or pine wood which has been soaked in melted paraffin wax to make it burn more easily. 这种被我们称之为火柴的薄木片由欧洲赤松(松树)制成, 在液体的石蜡

发表于:2018-12-18 / 阅读(197) / 评论(0) 分类 英国学生科学读本

Have you ever had a problem getting a match to light? If so, you might be using the wrong type of match. There are actually two different types of matches: safety matches and strike-anywhere matches. 以前你点燃火柴时有没有点不着的时候呢

发表于:2018-12-18 / 阅读(171) / 评论(0) 分类 2018年NPR美国国家公共电台2月

These were permissive times, and in 1970, one legendary director finally brought his long-harboured homage of Holmes to the screen. 当时性风气相当开放。1970年,一位传奇导演终于将他对福尔摩斯的长久敬意搬上了银幕。

发表于:2019-01-01 / 阅读(215) / 评论(0) 分类 如何成为福尔摩斯

This town here has sort of been going through clean-up. People are trying to salvage things from their houses, but the reality is when you talk to them, there's nothing they can salvage when has been touched by this red toxic chemical mix. People sho

发表于:2019-01-08 / 阅读(204) / 评论(0) 分类 CNN2010年(十)月

This is Scientific American's 60-Second Science, I'm Christopher Intagliata. Got a minute? Life on earth requires six basic ingredientscarbon, hydrogen, nitrogen, oxygen, sulfur and phosphorus. Those six elements are the building blocks for DNA and R

发表于:2019-01-08 / 阅读(203) / 评论(0) 分类 Scientific American(十二)月

The US House is expected to vote this hour on whether to extend expiring tax cuts for everyone, including the wealthy. NPR's Andrea Seabrook reports the issue's been generating heated debate. Democrats say they want to keep lower tax rates from middl

发表于:2019-01-08 / 阅读(232) / 评论(0) 分类 2010年NPR美国国家公共电台12月

A acceptable daily intake (ADI) 每人每日容许摄入量 acclimatization 气候适应 accumulate 蓄积 acetylandromedol 乙酰柽木醇毒 acceptable risk level 可接受的危险水平 acid-forming food 成酸性食品 Achromobacterium 无色菌属 Act for preventing the adulterati

发表于:2019-01-08 / 阅读(319) / 评论(0) 分类 英文语法词汇

This is the VOA Special English Agriculture Report. Hogs at an Ohio farm Research shows that waste from pigs that are fed a special kind of corn may help a farmer's crops. And it also may help the environment. Any farmer who raises swine knows that

发表于:2019-01-11 / 阅读(262) / 评论(0) 分类 VOA慢速英语2008年(八)月

By Peter Fedynsky Moscow 18 July 2007 Officials in Ukraine are assessing the damage of a train crash in western Ukraine that sent huge clouds of burning phosphorus billowing into the air. The accident, which took place Monday, is raising health conce

发表于:2019-01-12 / 阅读(200) / 评论(0) 分类 2007年VOA标准英语(七月)

Tests Show Levels of Arsenic in US Rice Two hundred different types of rice and rice products tested by both the non-profit research group, Consumer Reports, and the U.S. Food and Drug Administration [FDA], contained varying levels of different forms

发表于:2019-01-13 / 阅读(203) / 评论(0) 分类 VOA标准英语2012年(九月)

MARY LOUISE KELLY, HOST: Summertime brings algae blooms to many parts of the country - those mats of bright green organisms that can blanket waterways. In places like Florida's Lake Okeechobee, the blooms hurt tourism. They kill fish. They threaten w

发表于:2019-01-17 / 阅读(201) / 评论(0) 分类 2018年NPR美国国家公共电台7月

The commercial potential for the stuffwhich soon became known as phosphorus, from Greek and Latin roots meaning light bearingwas not lost on eager businesspeople, but the difficulties of manufacture made it too costly to exploit. An ounce of phosphor

发表于:2019-01-29 / 阅读(187) / 评论(0) 分类 万物简史

A alternate bearing 大小年结果 amendment 调理剂 ample 充足的 anatomical 解剖的 aneuploid 非整倍性(的) anion 阴离子 annual 一年生植物,一季生植物 anther 花粉囊,花药 anthocyanin [植]炭疽病 antibiotic 抗生

发表于:2019-02-09 / 阅读(328) / 评论(0) 分类 英文语法词汇

If President Donald Trump were a food, what food would he be? 如果特朗普是种食物,他会是啥? If Trump were a food hed be a creampuff filled with poisoned and infectious cream filling. The gooey cream would be chock full of lead, mercur

发表于:2019-02-18 / 阅读(232) / 评论(0) 分类 英语新闻

The proportion of hazardous metal toxins in PM2.5 in Beijing has decreased for the past three years, which experts lauded as the initial achievement of the city's anti-smog measures. 过去三年,北京市PM2.5中对人体有害的金属毒素的比重

发表于:2019-02-18 / 阅读(231) / 评论(0) 分类 英语新闻

Get enough sleep I have a theory about sleep. My theory is this: everyone who routinely uses an alarm clock suffers from chronic sleep deprivation. Using an alarm clock a few times a year (to catch a plane or have a phone call with someone in another

发表于:2019-02-18 / 阅读(202) / 评论(0) 分类 阅读空间

Matches Striking matches, on this Moment of Science. Have you ever had a problem getting a match to light? If so, you might be using the wrong type of match. There are actually two different types of matches: safety matches and strike-anywhere matche

发表于:2019-02-26 / 阅读(202) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
activated petroleum coke
American standard steel section
another-gaines
arthrodesis of interphalangeal joint of hand
atarba (atarbodes) fuscicornis
aviation specification isopropyl nitrate (monofuel)
bar marker
bdha
blubber
bound ion
bourrelet
brethaid
coeloglossum bracteatums
conneicut
coubling resistance
country-dweller
creative initiative
critical incident
cut-off meander spur(meander core)
data parallel
debeaks
detention storage detention
Dospat
dry dock length
echo suppressor
edss
express undertaking
external evidence
farm products
fighter aircrafts
flocculous
for the benefit of sb
forced draught cooling arrangement
frequency dependence
Fuenteguinaldo
Gapado
geometric dilution of precision
gloriously
Guimaras Str.
guysers
Itaugua
juku
kali arsenicosum
kishino
kongkang
lig. collaterale carpi radiale
loading drift
lovtchorrite (mosandrite)
meteorological radar observation room
methyl 5-mercapto-1-tetrazole acetate
Michelia balansae
micromirror
modulo-N
monolatrism
mutual cross listing
myocardium (or myocardial layer)
nasrin
nonconducting transistor
on-scale range
ordinary interest
parasitic error
parasitic insect
party-pieces
patent system
permanent alimony
physical chemistry of surface phenomenon
pleasant i. (nauru)
polygonum giganteum dietr.var.thunbergii maxim.
polyp of rectum
portfolio mix
postinitiation
powdered soup
preliminary correction
psalmss
random parameter system
re-appropriated
rebounder
recession hydrograph
Ringtailed raccoon
rondnesse
run of house
running loss
rusky
sedimentation analysis
see no further than one's nose
settlement geography
short tempers
snow-apples
spectral hole-burning
structural trapping
suicide pacts
tai yuans
tetrachloroethylenes
thixotropic property
transcendental expression
tsp.
two-side needled
ultra-abyssal
ultrasonic level detector
Union Bank of Hong Kong Ltd.
water screen tube
well-considered