波长分多工脉冲放大

17Giving First Aid GLOSSARY nurse a medical professional who helps a doctor; a person who provides basic medial services, but isnt as highly trained and educated as a doctor* If you like taking care of people, but you dont want to be a medical studen

发表于:2018-12-03 / 阅读(180) / 评论(0) 分类 2007年ESL之就医和人际交往

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(80) / 评论(0) 分类 美丽新世界

So how is it, doc? It goes alright? Good. OK. I have my pulse checked coz Jim from Texas says his pulse is fast, really fast and he'd like to know if he should worry about it. Is a fast pulse an indication of anything specific? Well, you'd know the n

发表于:2018-12-11 / 阅读(135) / 评论(0) 分类 访谈录2009

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(76) / 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(73) / 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(70) / 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(86) / 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(74) / 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(92) / 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(124) / 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(90) / 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)

(SOUNDBITE OF MUSIC) DAVID GREENE, HOST: So it has been a year now since a gunman killed 49 people at the Pulse nightclub in Orlando. And today on StoryCorps, we're going to remember Deonka Drayton, one of the people murdered that night. She was 32 a

发表于:2019-01-17 / 阅读(183) / 评论(0) 分类 2017年NPR美国国家公共电台6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(68) / 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(116) / 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(106) / 评论(0) 分类 VOA常速英语2007年(十一月)

Lesson 334 Your pulse is regular. 1.Your pulse is regular.您的脉搏正常。 2.I have a regular diet.我的饮食是有规律。 3.I'm not a regular lawyer.我不是正式的律师。 4.He has no regular work.他没有正式的工作。 5.It's my

发表于:2019-02-12 / 阅读(134) / 评论(0) 分类 辛沛沛NO-BOOK 辛沛沛傻瓜机口语极短句

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(74) / 评论(0) 分类 2018年科学美国人10月

A: Help! Are you a doctor? My poor little Frankie has stopped breathing! Oh my gosh, Help me! I tried to perform CPR, but I just don t know if I could get any air into his lungs! Oh, Frankie! B: Ellen, get him hooked up to a monitor! Someone page Dr.

发表于:2019-02-15 / 阅读(78) / 评论(0) 分类 英语播客-EnglishPod

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(98) / 评论(0) 分类 双语有声阅读
学英语单词
a-m tuner
absolute parallax
accessory factor
antiknock rating
aterio-cardiac
bangdas
Chimpembe
Chinese character coding scheme
cholecystoelectrocoagulectomy
choletelin
clear liquid diet
communtating zone
concrete mixers
condition monitor
croyned
cytoplasmicgroundsubstance
dangerous fallacy
DCYD
destination-prefix
divvy duck
Draft Convention on Combined Transport
drug-oriented
elevation setting
erkensator
eschatologist
Eurocents
external cutting
extricate sb from difficulties
Falapen
feeling the ground
ferlins
festinated
fill-in line
Flurocytosin
frail
Froebelians
gelosie
gemena
get off lightly
Glucohaem
grasseriomycin
Hager City
high absolute photocathode
hooktip
Houthist
hydrosphere
intermittent air blast
it is true that
jesuss of nazareth
kinleys
kitui
Kotanbetsu
lacewoods
laelaps muris
lamalginite
laparo-uterotomy
lysosomosecretion
masking pieces
microfoundation
Mohmmed
morainic clay
mouse over
Mtbf, mean-time-between-failures.
multiacavity
multimedia cataloging database
neoencephalons
net control program
new siberian is.
nitriding medium
no.2
normal memory
OAAPS
OSTREINA
overflow cofferdam
paintballed
Paste area
philosophical thoughts
Pizhanskiy Rayon
powdered rubber
power-on electric test
preventive eugenics
ptyr
punctato-
rhinodermatid
rostral carina
Saengjang
sells out
shaytan
sphenomite
spiral fibers
station plaza
stimulated dark current
stock margin trading
stread flaw
strychnos alkaloids
sulfur pearl
telnet client
timer command
Tonyol
venially
whitelows
wing brogue