[电] 推挽放大

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(79) / 评论(0) 分类 美丽新世界

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(72) / 评论(0) 分类 2013年VOA慢速英语(二)月

Identity Thieves’ New Ploy: Pharming 2 How do people pharm? Pharming scams take a few different forms: Attackers could use malicious code, such as a virus, planted on a user’s PC to track keystrok

发表于:2018-12-19 / 阅读(163) / 评论(0) 分类 彭蒙惠英语

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(68) / 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(58) / 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(84) / 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(71) / 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(89) / 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(116) / 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(86) / 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(63) / 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(66) / 评论(0) 分类 TED演讲国际问题篇

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!

发表于:2019-01-20 / 阅读(80) / 评论(0) 分类 英语单词荟萃

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(114) / 评论(0) 分类 英语语言学习

Grammar Girl here. Today's topic is hyphens. On Monday afternoon Pat was watching the cable channel CNBC and called me over to the TV because the hosts were talking about hyphens. Yup, in the middle of a segment on the economy, they started talking a

发表于:2019-01-30 / 阅读(159) / 评论(0) 分类 英语语法 Grammar Girl

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(101) / 评论(0) 分类 VOA常速英语2007年(十一月)

Ganso could be out until 2013, says physio RIO DE JANEIRO, Sept. 28 (Xinhua) -- Brazil midfielder Paulo Henrique Ganso could be forced to wait until next year to make his debut for new club Sao Paulo. Ganso, who joined the Brazilian top division outf

发表于:2019-02-06 / 阅读(139) / 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(61) / 评论(0) 分类 2018年科学美国人10月

我们上次学的习惯用语都有push也就是推这个词,而我们今天要讲的习惯用语却都有一个动作相反的词pull, 也就是拉。我们先要学两个习惯用语,它们分别是:pull for. Pull for是打气、鼓劲,或

发表于:2019-02-18 / 阅读(127) / 评论(0) 分类 美国习惯用语

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(94) / 评论(0) 分类 双语有声阅读
学英语单词
3-nitrophthalic acid
ad valorem import duties
agri-
aligo
automated-teller
b.o.f.
ballistic reentry vehicle
Ban Nong Thom
bleeding pipe
butterfields
camphor butter
chiffon batiste
chloromethylbenzene
Cholebrine
chondrolysis
Christian Right
Chërnyy Uryum
closed end needle
Clostridium polymixa
column count
congealing spray
corrosion testing machine
corrugated glass
Dakshin Naogaon
de-Stalinization,destalinization
diakaashe
disc spindle motor
double frequency generator
earcushion
empirical approach
facioauriculovertebral
fill ... in
fluorescent anode
forty thousand
french foot
fully variable multiple access
fundaments
gamma-hydroxybutyrate
glass fiber covered wire
gradient terraces
harvestings
inside square-corner slick
interlobar surfaces
Koreanness
large cranberries
light and shadow
lm.,lm
location?based service
members of staff
micropylar funnel
minirhizotrons
minor-caliber weapon
Miyamoto Musashi
monoaxial monster
Montbazillac
multijob scheduling
ODARS (on-line diagnostic and report system)
Oksbφl
ophiacanthas
Paludians
photorespired
plocach
principled'Alembert
protective leaf
pseudomembranous enterocolitis
quartz retaining spring
queenlet
quick acting door
quick freezing
radio-potassium
recognition time
S matrix theory
sartorial
segregational petite
selected translation journal
semi-conductor-diode parametric amplifier
semi-skimmed milk
set of ordered sequence
sinoreserpine
sit up and take notice
skin damage
spenmatogonia
statistics of population
stephen king
subsurface transformer
suv
Suwannee River
synchroneities
tangents
Taoryl
tooth family
tract-
travelling stair
ultraviolet analysis
urine test
vaso-constriction
vinca roseas
wagonmaking
wish sb further
Wishkah
Yaz'va
zealand