[化] 低温聚合物; 冷聚橡胶

Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective functioning. Enzyme systems of mammals and birds are most efficient only withi

发表于:2018-12-01 / 阅读(300) / 评论(0) 分类 新东方背诵文选

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 mend Things will mend in time. v. 改进

发表于:2018-12-05 / 阅读(170) / 评论(0) 分类 每日攻克5词

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Are your car bumpers riddled with scars from encounters with tight parking spaces? Did the furniture movers scratch your floor? Wouldn't it be great if t

发表于:2018-12-24 / 阅读(149) / 评论(0) 分类 Scientific American(四)月

This is Scientific American's 60-Second Science. Im Cynthia Graber. This will just take a minute. Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because

发表于:2018-12-24 / 阅读(178) / 评论(0) 分类 Scientific American(三)月

Most of us blink without thinking. But people whove sustained strokes or combat injuries can lose their ability to blink. Which is important for lubricating and cleaning the eye. Surgery is an optiona small piece of muscle transplanted from the leg c

发表于:2018-12-24 / 阅读(158) / 评论(0) 分类 Scientific American(一)月

Lowering the Ceiling on Roof Energy Losses Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because traditional black asphalt roofs heat up in summer and s

发表于:2019-01-02 / 阅读(165) / 评论(0) 分类 60秒科学

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(213) / 评论(0) 分类 Scientific American(九)月

Patients undergoing coronary bypass surgery need implants of new, healthy blood vessels. So do those who receive repeated hemodialysis due to kidney failure. The best option is to use the patient's own veins or arteries, but thousands of patients don

发表于:2019-01-08 / 阅读(164) / 评论(0) 分类 Scientific American(二)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Solar cells convert sunlight to electricity. But they don't take advantage of all that solar heat, thereby missing out on the majority of the solar ene

发表于:2019-01-08 / 阅读(214) / 评论(0) 分类 Scientific American(四)月

By Cathy Majtenyi Nairobi 19 May 2008 Fuel efficient stoves and ceramic water purifiers are two examples of low-tech innovations that can help people in poor countries improve their quality of life. Because what is known as appropriate technology usu

发表于:2019-01-10 / 阅读(167) / 评论(0) 分类 VOA标准英语2008年(五月)

All Time Low The Wanted Praying won't do it Hating won't do it Drinking won't do it Fighting won't knock you out Of my head Hiding won't hide it Smiling won't hide it Like I ain't tried it Everyone's tried it now And failed somehow So when you gonna

发表于:2019-01-10 / 阅读(154) / 评论(0) 分类 好听的英文歌曲

Some bacteria have adapted to super cold environments for millions of years. And scientists have isolated some of the essential genes that allow bacteria to tolerate their harsh living conditionsbecause these same genes might help in the creation of

发表于:2019-01-11 / 阅读(176) / 评论(0) 分类 英语杂谈

Slow and Gentle Are Best in Treating Hypothermia From VOA Learning English, this is the Health Report in Special English. Last week, we talked about ways to avoid cold-weather injuries. This week, we are going to talk about emergency treatment of hyp

发表于:2019-01-12 / 阅读(146) / 评论(0) 分类 2013年VOA慢速英语(五)月

Research Breakthrough for Biodegradable Tires? 研究人员研发完全可降解轮胎 Researchers say they have created a new synthetic rubber that could be used to make biodegradable tires. A team at Texas AM Universitys campus in the Gulf nation o

发表于:2019-01-12 / 阅读(122) / 评论(0) 分类 2016年VOA慢速英语(九)月

'Smart' Bandages Could Heal Wounds More Quickly 智能绷带有助更快治愈伤口 Simple bandages are usually seen as the first line of attack in healing small to moderate wounds and burns. But scientists say new synthetic materials with embedded

发表于:2019-01-14 / 阅读(234) / 评论(0) 分类 VOA标准英语2016年(二月)

AILSA CHANG, HOST: You may have heard in recent years that minor league baseball players don't exactly share in the riches of the game. Most minor leaguers make an estimated $7,500 per year. Major League players average more than four million. A law

发表于:2019-01-17 / 阅读(240) / 评论(0) 分类 2018年NPR美国国家公共电台8月

今天我们还是继续讲在大选年中时常用到的习惯用语。多数参选的侯选人在选战刚拉开序幕时常常会作承诺。例如,他们会信誓旦旦地保证绝不向竞争对手进行人身攻击,也决不信口诋毁对手

发表于:2019-02-12 / 阅读(210) / 评论(0) 分类 美国习惯用语

冠军单曲 围观帅哥:The Wanted - All Time Low The Wanted,英国新晋男子偶像组合为什么又是男子组合呢?还打偶像的招牌,看照片上果然是五只大帅哥,其中年龄最大的21岁,最小的17岁歌么,不错,

发表于:2019-02-17 / 阅读(160) / 评论(0) 分类 流行英文歌曲

How Low [Hook] How low can you go? [8x] [Ludacris] Luda! She could go lower than i ever really thought she could, Face down, ass up! The top of your booty jiggling out your jeans, Baby pull your pants up, I like it when i see you do it, Better then i

发表于:2019-02-18 / 阅读(195) / 评论(0) 分类 好听的英文歌曲

Low [Chorus:] Shawty had them Apple Bottom Jeans [Jeans] Boots with the fur [With the fur] The whole club was lookin at her She hit the flo [She hit the flo] Next thing you know Shawty got low low low low low low low low Them baggy sweat pants And th

发表于:2019-02-18 / 阅读(175) / 评论(0) 分类 好听的英文歌曲
学英语单词
AECA
ailin'
air slide valve
alligations
anabaptizes
antilcer
antimonpearceite
assessment tool
balloon plate
before one can say knife
box-spring
Cantona
carris
cattle cakes
chemistry of sea water
chloracetyl
chronic granulocytopenia
clonmell
coefficient of personnel demand
commutator rectifier
condensate return piping
conversion privilege of preferred stock
corydalis curviflora maxim.
crematogaster treubi apilis
D-ELATERIN
danger mark
deafener
deafening silences
desmie region
Digenea
dispersonalize
dredgers
duplex copying
eppenstein
euphrasia iinumai takeda
EURYPHARYNGIDAE
federal officials
foreign partnership
foreshortening
forevacuum pressure
gas extraction
ground-contour-following device
horizontal deflection driver
hot crimping
hydrodynamic interaction
IAPD
indirectamente
isopentennyladenine
jamb
Kartikeya
Lao She
leechings
ligne ga(u)ge
local-deterministic axiom
magnetic separation cleaning
medium voltage winding
melilite olibine nephelinite
musulin
Nango
normal probability plot
normed space
orange-seed oil
Oriental button
ostium secundum defect
outer regulator corrector
photochemical dissociation
platinum(iv) chloride
platyfish
power-drives
principal metal
projection TV
ramsbothams
re-exhaust
redcued
repetitive peak inverse current
restricted cosmological principle
ridable
risk of rust
robemaking
rod journal
roll book
RSBS
salafs
sanguinarine nitrate
segmental orifice plate
semantic incommensurability
seventeenth parallel
sides
specimen requirements
split straws
spruced up
sulci palpebralis inferior
temperature warning sensor
territorialise
tidal current limit
towtruck
trespass to chattel
trezevant
triple deck
triturations
truely