放电泵浦氮离子激光器

初级英语听力(新版) Lesson17 What's the postage on these letters to Thailand, please? I'll have to check. Do you need anything else? Yes. A three pence stamp, please. That'll be eighty-five pence in all. I wish you wouldn't have your TV so lou

发表于:2018-12-01 / 阅读(202) / 评论(0) 分类 初级英语听力新版

Electric Fish 发电鱼 One way that Harold Zakon and his team find fish to study is to put electrical detectors into the bottom of murky streams in Venezuela. This works because certain fish emit pulses of electricity. Discover electric fish -- on tod

发表于:2018-12-07 / 阅读(135) / 评论(0) 分类 (科普英语)Earth and Sky

By Carol Pearson Washington 30 April 2008 Ten years ago, the U.S. Food and Drug Administration approved LASIK, eye surgery with a laser that enables people to see without glasses. But about five percent of LASIK procedures fail, and those patients ca

发表于:2018-12-08 / 阅读(129) / 评论(0) 分类 VOA常速英语2008年(四月)

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(114) / 评论(0) 分类 2013年VOA慢速英语(二)月

New Laser Device Helps Parkinson's Patients Walk 新激光设备帮助帕金森患者重获行走能力 Parkinsons disease slowly destroys the brains ability to control the muscles, depriving the patients of their mobility. Researchers at the Mayo Cl

发表于:2018-12-16 / 阅读(98) / 评论(0) 分类 VOA标准英语2014年(二月)

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. The Chesapeake Bay could get helped by a new antipollution expert: farmed oysters. For decades, the Chesapeake has been plagued by excess nutrients, such

发表于:2018-12-24 / 阅读(118) / 评论(0) 分类 Scientific American(一)月

AGRICULTURE REPORT - Bird Flu: Composting the Remains of Farm BirdsBy Mario Ritter Broadcast: Tuesday, February 28, 2006 I'm Steve Ember with the VOA Special English Agriculture Report. Farmers usuall

发表于:2019-01-02 / 阅读(105) / 评论(0) 分类 2006年慢速英语(二)月

Broadcast: June 4, 2003 By Paul Thompson VOICE ONE: This is Ray Freeman. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. Today, we tell about how astronauts prepa

发表于:2019-01-02 / 阅读(129) / 评论(0) 分类 VOA2003(上)-科技导航

The United States Navy has demonstrated a new laser weapon operating in the Persian Gulf. The Laser Weapons System, or LaWS, is deployed on the USS Ponce transport ship. A live test firing of the weapon was recently carried out for Cable News Network

发表于:2019-01-02 / 阅读(126) / 评论(0) 分类 2017年VOA慢速英语(七)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?. [Spray sound.] Killing bugs? No. [Spray sound.] Deodorizing the bathroom? No. [Spray sound.] Checking for explosives, yes. Because chemists at the University of Califor

发表于:2019-01-08 / 阅读(170) / 评论(0) 分类 Scientific American(九)月

This is All Things Considered. I'm Michelle Norris. Phone calls from Sweden woke up two American scientists this morning, John Hall and Roy Glauber. They will share the Nobel Prize for Physics with a German Researcher Theodor Haensch. All three worke

发表于:2019-01-08 / 阅读(194) / 评论(0) 分类 2005年NPR美国国家公共电台

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(173) / 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(146) / 评论(0) 分类 2012年VOA慢速英语(一)月

Fukushima Plant Operator: Nitrogen Pumping Operation Going Well A plan to inject nitrogen into the containment vessel around reactor 1 at the Fukushima Daiichi power plant appears to be working, the plant owner said Thursday. Higher pressure levels h

发表于:2019-01-14 / 阅读(125) / 评论(0) 分类 VOA标准英语2011年(四月)

托福考试(TOEFL)是国际上最有影响力,使用最广泛的的英语水平测试之一。托福除了作为美国主流学校入学所需的标准化考试,申请签证和工作的过程中也会有需要托福成绩的机会,所以不少

发表于:2019-01-18 / 阅读(105) / 评论(0) 分类 托福英语

The geology of the planet 地球的地质情况 Welcome to the Anthropocene 欢迎来到人类纪 Humans have changed the way the world works. Now they have to change the way they think about it, too 人类改变了世界运行方式,现在,人类不

发表于:2019-01-26 / 阅读(152) / 评论(0) 分类 经济学人综合

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(146) / 评论(0) 分类 VOA常速英语2007年(十一月)

Parliament began again yesterday after the Christmas break. Two important matters made the news today from Parliament. The first matter was to put more money into the economy and provide jobs. The government is putting $500,000 in to economy for majo

发表于:2019-01-31 / 阅读(100) / 评论(0) 分类 新西兰英语

GRE阅读复备考之类比思维。考生在做gre阅读复习过程中也可以运用类比的思维解题。在GRE阅读中绝对不少见,也就是常说的类比题。主要说下述哪一选项所述现象和原文第N行的说法比较相像

发表于:2019-02-17 / 阅读(112) / 评论(0) 分类 GRE英语

1.Above all:最重要的是,most important of all Above all, theyll have to discover how much nitrogen it possesses since nitrogen is4/5 of the air breathe.(2002-1) 2.Account for:解释。说明 How do you account for the truth? 3.After

发表于:2019-02-18 / 阅读(91) / 评论(0) 分类 大学四六级阅读
学英语单词
a lot of doing
abligury
accumulations and gatherings
anterior cardiac plexus
back-channelled
blood group substance
bornyl amine
break one's oathoath-breaking
bulboatrial crest
catted us
caulking metal
cellular array multiplier
chairlike
Chilo suppressalis
chlorobenzene dye
cholera fever
circum-Pacific orogenic zone
commercial invoicf
cryptocentrus strigilliceps
cyranose
deviation mark
discovering trench
disinteressed
donatives
drum memory unit
dune plant
e-mail bombs
eist
equal symbol
ethological approach
external otitis
family phocidaes
frequency measurement by stroboscope
gas hydrate phase diagram
gauge calibration
Gayndah
geometric structure
Glavan
greenhills
handprintings
honeyflower
hot air apparatus
How much do you practice every day
I wouldn't say no
immunonutrition
innovative ability
intermodulation (im) noise
intestinal spleen
leather paper
leud
long-horned
Los Planes
lubrication box
magnetostrictive vibration generator system
Mantoche
marsh gentian
micropogon
microprogram efficiency
moldboard jointer
mouvements
nanocolumn
neat stuff
Neo-Fulcin
neutrino
non-learning
nonarithmetic statement
Nyahuka
oscillator load
party-goers
pentaline
petiolus cartilaginis epiglottidis
photographs
pocket-map
polistes (gyrostoma) jokahamae
power-fail circuit
Prince-of-Wales feather
Psathyrostachys kronenburgii
pumped
raniganjs
Raynes
receive window
registered port numbers
revisable
revoluting speed
RNECT
secondary lobe
securities exchange
sensate focus
SESIIDAE
sign legibility
stabilized wire
subversion of the government
synsepal
synthetic gem
t.harris
telescopes
titanium deposit
token bus architecture
uninstantiable
Uzhurskiy Rayon
venning
Wal.