[电] 电流放大

I love the news and current events. Im addicted to whats happening in the world. It doesnt matter what kind of news it is, I love watching it. Even if its from countries Ive never heard of. Ill even watch the same news programme three or four times a

发表于:2018-12-04 / 阅读(232) / 评论(0) 分类 听一分钟英文-C

Splendid! He kept his telescopic cameras carefully aimedglued to their moving objective; 精彩片他小心地调着望远摄影机的镜头,盯紧了那移动着的对象。 clapped on a higher power to get a close-up of the frantic and distorted

发表于:2018-12-07 / 阅读(164) / 评论(0) 分类 美丽新世界

it is a pity that every summer a few people drown at the beach. In some cases, these people were good swimmers. So how did it happen? Riptide! Riptide is a strong underwater current. It moves quickly

发表于:2018-12-08 / 阅读(491) / 评论(0) 分类 赖世雄中级美国英语

EXPLORATIONS - The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can

发表于:2018-12-16 / 阅读(179) / 评论(0) 分类 2013年VOA慢速英语(二)月

BBC News with Julia Candler. A senior member of North Koreas government has warned that his country would react with a pre-emptive nuclear strike if it saw signs that the US was preparing to launch an attack. Speaking to the BBC, the Vice Foreign Min

发表于:2018-12-20 / 阅读(191) / 评论(0) 分类 中英双语新闻

This is Scientific American's 60s Science. I'm Karen Hopkin. This will just take a minute. Think about the tools used by biologists, perhaps test tubes and microscopes come to mind. But what about diapers? No, it's not the investigators in their work

发表于:2018-12-24 / 阅读(248) / 评论(0) 分类 2015年Scientific American(一)月

I love the news and current events. Im addicted to whats happening in the world. It doesnt matter what kind of news it is, I love watching it. Even if its from countries Ive never heard of. Ill even watch the same news programme three or four times a

发表于:2018-12-26 / 阅读(206) / 评论(0) 分类 纯正英语一分钟

By Steve Herman Japan records an increase in its current account surplus, despite a drop for the country's trade surplus. A debt-ridden retail chain accepts a government-backed rescue, and there are m

发表于:2019-01-03 / 阅读(243) / 评论(0) 分类 VOA2004(下)--世界经济

In my lab, we recently made a cancer nanodetector 在我的实验室,我们最近研制出了一种癌症纳米检测器, that is so small that it could travel into the body and look for tumors. 小到可以进入全身血液循环并寻找肿瘤。

发表于:2019-01-03 / 阅读(201) / 评论(0) 分类 TED演讲科学篇

PCRthe polymerase chain reactionis a crucial tool. The DNA amplification technique is used in genome sequencing, forensics and the diagnosis of various diseases. To give researchers more genetic material to work with, a PCR instrument repeatedly heat

发表于:2019-01-08 / 阅读(194) / 评论(0) 分类 Scientific American(十)月

This is Scientific American 60 Second Science, I am Karen Hopkin, this will just take a minute. Every year, about 10 million tons of paper winds up in American landfills and incinerators, which is not only wasteful but adds CO2 to the atmosphere. Rec

发表于:2019-01-08 / 阅读(196) / 评论(0) 分类 Scientific American(三)月

The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the sci

发表于:2019-01-12 / 阅读(241) / 评论(0) 分类 2013年VOA慢速英语(五)月

EXPLORATIONS - The Laser: Futuristic Science Found at Your Local Store MARIO RITTER: Welcome to EXPLORATIONS in VOA Special English.Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one

发表于:2019-01-12 / 阅读(213) / 评论(0) 分类 2012年VOA慢速英语(一)月

'Word on Street' Impacted Language in 2011 While 2011 is over, some of the words that came to define the past year are still very much with us, and may be for years to come. Since 2011 was an especially busy year for grassroots political action, many

发表于:2019-01-13 / 阅读(159) / 评论(0) 分类 VOA标准英语2012年(一月)

Because of course, the ear is, I mean, subject to all sorts of things. 这当然是因为,我是说,耳朵受制于很多因素。 The room we happen to be in, the amplification, the quality of the instrument,the type of sticks...etc., etc. 我们现

发表于:2019-01-18 / 阅读(167) / 评论(0) 分类 TED演讲国际问题篇

Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the science of the future to eve

发表于:2019-01-24 / 阅读(279) / 评论(0) 分类 英语语言学习

By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti

发表于:2019-01-31 / 阅读(223) / 评论(0) 分类 VOA常速英语2007年(十一月)

Nobel in Physics for Controlling Laser Light 诺贝尔物理学奖颁给激光控制实验者 The main practical application of CPA so far has been in the eye surgery. It was the first one, and I think it is the one that is used by the most people fo

发表于:2019-02-14 / 阅读(256) / 评论(0) 分类 2018年科学美国人10月

歌曲 : Love One Another 艺人 : A Current Affair 音乐星级 : ★★★ 所属专辑 : Life in an Hourglass 发行年代 : 2007 风格 : Alternative Rock 介绍 : A Current Affair是一只来自美国加州的由5人组成的摇滚乐队。他们最初被当地的广播台挖掘,而广播台也因

发表于:2019-02-20 / 阅读(255) / 评论(0) 分类 英文摇滚歌曲

The Revolution in American Higher Education To produce the upheaval in the United States that changed and modernized the domain of higher education from the mid 1860's to the mid 1880's, three primary causes interacted. The emergence of a half dozen

发表于:2019-02-25 / 阅读(220) / 评论(0) 分类 双语有声阅读
学英语单词
abdus
abruzzo
accounting systems
aluminized fuel
assibilating
bell call
bismetallated
blueskin
cargo information
carpodkphosis
cathode assembly
Centenillo
Cheung Prey
chinese six
co-counsellings
condylar shaft
copperplate print
couponers
cycle access memory
detention cell
dial up terminal line
do you have a menu in English
docious
DPV (dry pipe valve)
Duraplex
E F Codd
endophytic oviposition
evidence of previous convictions
exchange in dollar
fault analysis
Fellodistomum
file viruses
fissocantharis chujoi
flower beetles
fuyu
gobelin blue
gray mold
guard vessel
hardening tank
hermeneutician
hope to god
housing and land
incentive payment plan
initial medium
insulator act ring
isickle
itching-powder
lap and lead lever
Lapithos
layout of hydroproject
leave sb to one's own devices
Liangguang
liquid oxygen loading liquid line system
location data
long-course
lymphopathia venereum
lysogenies
make a hare of sb
me-me-me
mean radius
modeccin
Mortimer's disease
multiplication tables
network supply
noncontact thermometer
parabolic camber
parged
peoplehoods
pinkwashed
pregozen
pulsation dampener
quaternary adduct
redbellies
regulator compliance
screened off
selective statement
self-propelled ropeway
serial analysis of gene expression
short of breath
single-point shovel
SIUP
sliding vector
slow closing device
spruce gum
square point shovel
steinhardt
sternumal (or sternal rib)
Stretch out!
superfluities
survivorship policy
T-rest
the clean thing
thermoprecipitin test
timing-chain connecting link
tomah
trustlessness
uncertainty phase
undertide
unstill
volume electromagnetic energy
wideouts
zre alloy