双放大电路

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(191) / 评论(0) 分类 美丽新世界

1933 、 点 dot 1934 、 点阵间距;点阵间隔 latticespacing 1935 、 点焊接 spotwelding 1936 、 醛树脂;电玉 ureaformaldehyde(UF) 1937 、 断面线 crosshatchingline 1938 、 断裂

发表于:2018-12-08 / 阅读(176) / 评论(0) 分类 英文名句短语

Little Johnny is talking to his mother. J: How come you always make me do things I don't want to? M: What do you mean? J: Well, for instance, you always force me to eat steaks, pork chops and chicken,

发表于:2018-12-08 / 阅读(293) / 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(216) / 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(206) / 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(270) / 评论(0) 分类 2015年Scientific American(一)月

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(221) / 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(218) / 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(228) / 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(280) / 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(244) / 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(188) / 评论(0) 分类 VOA标准英语2012年(一月)

Maryland Couple Makes Beautiful Objects From Recycled Circuit Board There is no shortage of recycled material for Debby Arem's creations. She uses everything, from pieces of scrap metal and electronic components, to computer circuit boards and chips.

发表于:2019-01-13 / 阅读(277) / 评论(0) 分类 VOA标准英语2012年(三月)

今天我们要讲几个在美国总统大选的竞选阶段常会用到的习惯用语。美国总统大选每四年举行一次。在大选年的前一年,准备竞争本党总统候选人提名的人士就已经在各州积极展开竞选活动了,

发表于:2019-01-16 / 阅读(316) / 评论(0) 分类 美国习惯用语

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(182) / 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(322) / 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(253) / 评论(0) 分类 VOA常速英语2007年(十一月)

TUNIS, March 24 (Xinhua) -- Elena Svitilona of Ukraine won the la Marsa Open after beating Bulgaria's Isabelle Shinikova 7-6, 7-6 in the final on Saturday in the north of the capital. On Friday, Svitilona easily defeated Tunisian hopeful Ons Jabeur,

发表于:2019-02-06 / 阅读(282) / 评论(0) 分类 英语新闻

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(295) / 评论(0) 分类 2018年科学美国人10月

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(248) / 评论(0) 分类 双语有声阅读
学英语单词
1-tetradecylene
all downhill
area of cross section
armories
As Sa'dīyāt
Atestine
autoclave-style beck
automatic feed
Bacillus satellitus
Basle Nomina Anatomica
be scare of
belittlest
broadcast mail
brunos
cab operator
calcium lipscombite
Catambué
charente (la charente riviere)
circumferential motion
class Cyanobacteria
clearing of estate
color video stage
coma pyloricum
computer geek
congruous hemianopsia
d?rnovichi (dzyornavichy)
de-afforest
delafloxacin
deuteranomaly
diplomatic agent
dispartation
Dyophysite
entire split system
execution profile
falsy
Femerital
fish-worships
flame ejaculation
flat nick
Gelarose
gill slits
gonadopathy
Gukhman number
hepatostomy
huddlement
Huechulafquén, L.
hypothetical proposition
illisions
implied promise
indium(i) sulfide
intra-auricular muscles
ionic diffusion
jagels
level-reversed bench
linguidentals
Litchi sinensk Sonn.
Macleaya cordata
microfarmers
most favorable signal
motour
namm
nevermo
nominal load capacity
non-address
nonconflicting
null reference system
object management authority
parietal border
phobic layer
phosphate test
pinocytotic vacuole
plague bacillus
political pluralism
popping crease
prompted mixing
psychiatric pathology
pyrokomane
quadruple play
Ranunculus stenorhynchus
reignition voltage
reticuloprotein
reversal of season
reversing and starting gear
sarcospan
sleeve coupling
sodium acid methanearsonate
solubiliser
Somonal
squared pitching
stem ginger
stone colour
stroughter
subassembly line
thiocyanatoiron(iii) ion
trolley dash
under full sail
value of cargo
vegetable tanned basil
wakes up
wild-goosest
wireball
Zhaohui