毫米波激光器

Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is about a millimeter across. Rod-shaped bacteria are u

发表于:2018-11-28 / 阅读(566) / 评论(0) 分类 新概念优美背诵短文50篇

Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is abo

发表于:2018-12-01 / 阅读(256) / 评论(0) 分类 新东方背诵文选

by Jason Marshall We use a lot of math words in our day-to-day lives without really understanding what they mean or where they come from. For example, prefixes like mega, giga, and tera that we use to describe computer hard drive sizes (think megabyt

发表于:2018-12-07 / 阅读(128) / 评论(0) 分类 数学英语

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(155) / 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(142) / 评论(0) 分类 2013年VOA慢速英语(二)月

This is Scientific America's 60 second science, I'm Sentay Graber, this will just take a minute. Magnifying glass, telescope, tiny tiny tape measure, these are the weapons with which researchers are fading it out to find the world's smallest frog.One

发表于:2018-12-24 / 阅读(157) / 评论(0) 分类 Scientific American(一)月

Magnifying glass, calipers, teeny tiny tape measure, these are the weapons with which researchers are fighting it out to find the world's smallest frog. One team just announced the discovery of the unaverage 7.7 millimeter p* which can sit comfortabl

发表于:2018-12-24 / 阅读(149) / 评论(0) 分类 Scientific American(一)月

Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is about a millimeter across. Rod-shaped bacteria are us

发表于:2018-12-30 / 阅读(130) / 评论(0) 分类 考研背诵50篇

说一口流利的英语,从简单的单词开始。 听听,读读,背背,今天你的词汇量又增加了5个。 单词/词义 中英例句 单词听读 long [ lCN ] I longed for a bicycle. v

发表于:2018-12-30 / 阅读(212) / 评论(0) 分类 每日攻克5词

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(158) / 评论(0) 分类 2017年VOA慢速英语(七)月

今天我们要学的词是heat wave。 Heat wave, 热浪,高温天气。 A heat wave is sweeping the Northeastern region of the United States, 美国东北部地区普遍出现高温天气。 The heat wave could be a record-breaker, 这次高温天气

发表于:2019-01-07 / 阅读(194) / 评论(0) 分类 英语单词荟萃

今天我们要学的词是heat wave。 Heat wave, 热浪,高温天气。 A heat wave is sweeping the Northeastern region of the United States, 美国东北部地区普遍出现高温天气。 The heat wave could be a record-breaker, 这次高温天气

发表于:2019-01-07 / 阅读(189) / 评论(0) 分类 英语每日一词

Cameras were once big and bulky. Today,really good cameras fit in your pocket. And now, researchers at Cornell havedeveloped a camera thats just a half-millimeter on each side and a hundredthof a millimeter thick. The lens-less device is called a Pla

发表于:2019-01-08 / 阅读(167) / 评论(0) 分类 Scientific American(七)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(212) / 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(176) / 评论(0) 分类 2012年VOA慢速英语(一)月

AS IT IS 2016-10-05 Nobel in Chemistry Goes to Makers of Worlds Smallest Machines 2016诺贝尔化学奖:世界上最小的机器 Three scientists have won the Nobel Prize in Chemistry for their work in developing tiny machines. The three men are Jea

发表于:2019-01-12 / 阅读(148) / 评论(0) 分类 2016年VOA慢速英语(十)月

Got ballistics back on the Holder murder. 霍尔德凶案的弹道分析出来了 They pulled two 7.62 millimeter bullets out of him. 他们取出了他身上两枚7.62毫米的子弹 According to the stippling and size of the entry wound, 根据伤口

发表于:2019-01-29 / 阅读(128) / 评论(0) 分类 绿箭侠第一季

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(184) / 评论(0) 分类 VOA常速英语2007年(十一月)

Bacteria Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is about a millimeter across. Rod-shaped bacter

发表于:2019-02-17 / 阅读(157) / 评论(0) 分类 双语有声阅读

48 Bacteria Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is about a millimeter across. Rod-shaped bac

发表于:2019-02-17 / 阅读(162) / 评论(0) 分类 双语有声阅读
学英语单词
-ie
American alligators
Arginotri-B
ATM Forum
Bergonie's method
bobeches
brimfullness
bubble pump
buck dance
business reply cards
byees
Canneto sull'Oglio
canonical base
Chamaya, R.
chirche
clangily
Colchicaceae
command level
common ground
conformally flat space
Creweian
crotovina
DACNOS
dedacciai
deny admission to
depository company
electroncephaloscope
EPIDEM
experimental archaeology
extensor primi internodii pollicis
eye lens
gevgelija (dzevdzelijad)
grinding building
hand-press
homogeneous mesophyll
hygroscopic coefficient
idiocladenthy
immobilized spindle
improved distress communication
iron handedly
isopropylmalonic acid
Koxhausen
Lacerta
lance-bombardier
lates
leaf peroxidase
lewistonite
Masher process
mobile intelligence and crystallized intelligence
modulated inversion region
movables
mushroom-type tunneling method
muzzle-loaders
Net investment income per share
norm-residue symbol
Northern Transvaal
OGDCL
ordinary loan
outeating
Palmeirina
peak diameter
phospholemman
planer type surface grinder
polishing oil
pollution prevention technique
polygonal ferrite
rardess
reaction rotating sprinkler
recognition image
recurvum
reinstitutionalise
reis
remultiplication
revelability
Richard Wright
rubber boa
Sharīfpur
short flexor muscle of little toe
slant range voice communication
sourbelly
spherical reflector
spring-cotter
stackin' papers
steel window frame & accessory
Stemodia verticillata
strategic-level systems
sugiol
temmerman
The death of wolves is the safety of the sheep.
thorsen
time-dependent lensingn effect
toek
treatment line
tremoured
tribromochlorosilane
tumble turn
two-core reactor
ultra violet photography
viral Western equine encephalitis
warburtons
water plugged by grouting
white cypresses