扫描电子显微镜

Our story today is called The Diamond Lens. It was written by Fitz-James O'Brien. We will tell the story in two parts. Now, here is Maurice Joyce with part one of The Diamond Lens. When I was ten years old, one of my older cousins gave me a microscop

发表于:2018-12-08 / 阅读(633) / 评论(0) 分类 2018年VOA慢速英语(二)月

High-Resolution Microscope Brings Tiny Worlds Closer to Researchers 高分辨率显微镜让研究员更好观察小世界 Modern microelectronic devices contain billions of components crammed into thumbnail-size flakes. The chemical industry uses na

发表于:2018-12-08 / 阅读(151) / 评论(0) 分类 VOA标准英语2015年(十月)

[00:00.00]Lesson 4 Atom [00:01.95]原子 [00:03.89]The really strange thing about atoms is that most of us will never see one. [00:08.87]原子最奇特之处在于绝大多数人永远也无法看到它。 [00:13.84]Atoms are so small that it's impo

发表于:2018-12-08 / 阅读(196) / 评论(0) 分类 赖世雄学英语第四册

Our story is called The Diamond Lens. It was written by Fitz-James O'Brien. Today we will hear the second and final part of the story. Here is Maurice Joyce with part two of The Diamond Lens. When I was a child, someone gave me a microscope. I spent

发表于:2019-01-03 / 阅读(474) / 评论(0) 分类 2018年VOA慢速英语(三)月

After hundreds of years, the most common, basic microscopes still operate by means of the same old hardware: the lens. But what if you could do away with that lens and create a microscope that fits on a cell phone? Thats what researchers led by Aydog

发表于:2019-01-08 / 阅读(260) / 评论(0) 分类 Scientific American(六)月

THIS IS AMERICA - Debate Over Electronic Voting By Jill Moss Broadcast: Monday, July 05, 2004 (MUSIC) VOICE ONE: Welcome to THIS IS AMERICA, in VOA Special English. I'm Gwen Outen. VOICE TWO: And I'm

发表于:2019-01-11 / 阅读(310) / 评论(0) 分类 This is America

This is the VOA Special English Development Report. Nanotechnology uses matter at the level of molecules and atoms. Researchers are finding different uses for particles with a length of one nanometer, or one-billionth of a meter. These include things

发表于:2019-01-11 / 阅读(175) / 评论(0) 分类 VOA慢速英语2007年(三)月

The Diamond Lens by Fitz-James O'Brien, Part Two 钻石镜头 by 菲茨詹姆斯奥布莱恩 Ⅱ Our story is called The Diamond Lens. It was written by Fitz-James O'Brien. Today we will hear the second and final part of the story. Here is Maurice Jo

发表于:2019-01-12 / 阅读(518) / 评论(0) 分类 2015年VOA慢速英语(七)月

The Diamond Lens by Fitz-James O'Brien, Part One 钻石镜头 by 菲茨詹姆斯奥布莱恩 Our story today is called The Diamond Lens. It was written by Fitz-James O'Brien. We will tell the story in two parts. Now, here is Maurice Joyce with part o

发表于:2019-01-12 / 阅读(242) / 评论(0) 分类 2015年VOA慢速英语(七)月

'The Diamond Lens' by Fitz-James O'Brien, Part Two 钻石透镜 II by 菲茨詹姆斯奥布赖恩 Our story is called The Diamond Lens. It was written by Fitz-James O'Brien. Today we will hear the second and final part of the story. Here is Maurice J

发表于:2019-01-12 / 阅读(380) / 评论(0) 分类 2016年VOA慢速英语(九)月

iPhone Becomes Low Cost Microscope The Apple iPhone can be used for lot of things making calls, playing games and sending pictures, video and text. Scientists say it also can be converted into a low-cost microscope to detect worm-related infections i

发表于:2019-01-14 / 阅读(230) / 评论(0) 分类 VOA标准英语2013年(三月)

高清显微镜探索微型世界 Modern microelectronic devices contain billions of components crammed into thumbnail-size flakes. The chemical industry uses nanoparticles to make better cleaning products, while pharmaceutical companies use them for

发表于:2019-01-14 / 阅读(243) / 评论(0) 分类 VOA标准英语2016年(一月)

Ladies first, partner? Edward asked. 搭档,女士优先?爱德华问。 I looked up to see him smiling a crooked smile so beautiful that I could only stare at him like an idiot. 我抬头看见他一脸坏笑,可笑得是那样的好看,害得

发表于:2019-01-22 / 阅读(157) / 评论(0) 分类 暮光之城•暮色

AMERICAN STORIES - The Diamond Lens, Part OneBy O'Brien, Fitz-James Broadcast: Saturday, April 01, 2006 Announcer: Now, the Special English program, AMERICAN STORIES. (MUSIC) Our story today is called

发表于:2019-01-30 / 阅读(229) / 评论(0) 分类 2006年慢速英语(四)月

AMERICAN STORIES - The Diamond Lens, Part TwoBy Fitz-James O'Brien Broadcast: Saturday, April 08, 2006 Announcer: Now, the Special English program, AMERICAN STORIES. (MUSIC) Our story is called The Di

发表于:2019-01-30 / 阅读(377) / 评论(0) 分类 2006年慢速英语(四)月

WASHINGTON, May 1 (Xinhua) -- Scientists from IBM on Wednesday unveiled the world's smallest movie, made with one of the tiniest elements in the universe: atoms. Named A Boy and His Atom, the movie used thousands of precisely placed atoms to create n

发表于:2019-02-04 / 阅读(199) / 评论(0) 分类 英语新闻

With consumers rushing to buy the latest gadgets, the problem of what to do with discarded electronic products is becoming a growing environmental concern. Although electronic recycling is not yet as popular as paper and plastic recycling, two Americ

发表于:2019-02-12 / 阅读(235) / 评论(0) 分类 VOA标准英语2010年(七)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(198) / 评论(0) 分类 双语有声阅读

The Microscopic Technique Each advance in microscopic technique has provided scientists with new perspectives on the function of living organisms and the nature of matter itself. The invention of the visible light microscope late in the sixteenth cen

发表于:2019-02-25 / 阅读(246) / 评论(0) 分类 双语有声阅读

How could you say you know who I am? Do you ever wonder why I'm here? The thoughts play back in your head like a film that has been stick on repeat. Imagine that this picture of me is painted for you. A portrait is made to hold a moment and moments w

发表于:2019-02-26 / 阅读(209) / 评论(0) 分类 英文摇滚歌曲
学英语单词
abominating
aculops monices
alberto giacomettis
angular momentum conservation
antiferromagnetism axis
aspect source flag
auriscopes
bicollateral
bilious remittent fever
billiard-table
bottom cutting
branch pilot
bridge-balance
bubble concrete
cartinoid
chenodeoxycholicacid
CIA Central Intelligence Agency
Comstock, Anthony
contribute the same amounts of funds and materials
corticotropin releasing factor (crf)
Corydalis pinnata
craftsmaster
deciteslas
designated contract
dihydroergosterol
drag a bunt
e-sports
education for the million
educational vocabulary
Elaeocarpus arthropus
electromechanical fire control computer
foramina costotransversarium
goliath frogs
Great Falls converter
ground plate
helius (helius) subfasciatus
hide pulling machine
improper noun
in sunder
International Commission on Acoustic
Iq7613
kelters
ledger clerk
light brown steppe soil
lose the field
Mahdiists
maximum rainfall
meningioma of optic nerve
metofenazate
Meuse-Argonne
MFMH
mold count
monopinch
Morris water mazes
no effects
non-gas shielded welding
panaxitrone
paradorsal muscle
pay-scale
pcanywhere
penstock characteristic constant
perilobar
photochemical phenomenon
platyophthalmon (stibnite)
preepiglottic adipose body
pressed liquor
proscopine
proslogions
quindecad
racemic modificaion
radiation enteritis
Raisino
rate of reaction
rechten
recombination process
rhomaleosaurids
rolltite hatchcover
sanford, mount
scatomancy
seismographic map
self-energizing brake
servial
shipbuilding technology
silty breccia
steam cooler
stitcher
suspension rheology
systolic clicking sounds
tailrides
teosinte
terata cata-anadidyma
thelyplasm
tonation
unpaged copy
USWI
vented tank
verbill
verduns
very low-density lipoprotein
war machines
waste operation