[化] 十硫化四磷

The 1)Notorious Jumping Frog of Calaveras County By Mark Twain Read by Marsh McCandless In 2)compliance with the request of a friend of mine, who wrote me from the East, I called on good-natured, 3)ga

发表于:2018-11-28 / 阅读(313) / 评论(0) 分类 疯狂英语2004年

The little splints of wood which we call matches are made out of deal or pine wood which has been soaked in melted paraffin wax to make it burn more easily. 这种被我们称之为火柴的薄木片由欧洲赤松(松树)制成, 在液体的石蜡

发表于:2018-12-18 / 阅读(188) / 评论(0) 分类 英国学生科学读本

Have you ever had a problem getting a match to light? If so, you might be using the wrong type of match. There are actually two different types of matches: safety matches and strike-anywhere matches. 以前你点燃火柴时有没有点不着的时候呢

发表于:2018-12-18 / 阅读(162) / 评论(0) 分类 2018年NPR美国国家公共电台2月

I couldn't get over this mess. The federal government is confirming what Joan Glickman of Pompano Beach, Florida suspected all along. Tainted drywall from China is giving off a harmful gas that's turning her air-conditioning wiring black, causing it

发表于:2018-12-20 / 阅读(179) / 评论(0) 分类 cnn2009年(十一)月

This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang

发表于:2018-12-24 / 阅读(222) / 评论(0) 分类 Scientific American(一)月

[00:00.00]Module 11 NELSON MANDELA [00:06.24]UNIT 1 I'm about to go to South Africa. [00:11.77]1 Listen and read. Then say. [00:16.29]Are you going somewhere, Dad? [00:18.53]Yes. I'm about to go to South Africa. [00:22.50]I have to do some work there

发表于:2018-12-29 / 阅读(229) / 评论(0) 分类 外研社新标准初中英语八年级

Mercury Fillings Seem Safer over Time A study in the journal Chemical Research in Toxicology finds that mercury on the surface of dental fillings slowly turns to an inert sulfide compound, which should keep the mercury from harming the nervous system

发表于:2019-01-02 / 阅读(262) / 评论(0) 分类 60秒科学

T Tanshinone IIA 丹参酮IIA Tanshinone I 丹参酮I Tanshinone IIB 丹参酮IIB Taraxasterol 蒲公英甾醇 Taraxerol 蒲公英赛醇 Tauro ursodesoxy cholic acid 牛磺熊去氧胆酸 Taxifolin 花旗

发表于:2019-01-03 / 阅读(214) / 评论(0) 分类 医务英语

Michelle Norris : From NPR News, this is All Things Considered. I'm Michelle Norris. Melissa Block : And I'm Melissa Block. Melissa Block : Government weather forecasters are calling for another busy hurricane season in the Atlantic. Here is what Co

发表于:2019-01-04 / 阅读(331) / 评论(0) 分类 2006年NPR美国国家公共电台

This is Scientific American's 60-Second Science, I'm Christopher Intagliata. Got a minute? Life on earth requires six basic ingredientscarbon, hydrogen, nitrogen, oxygen, sulfur and phosphorus. Those six elements are the building blocks for DNA and R

发表于:2019-01-08 / 阅读(199) / 评论(0) 分类 Scientific American(十二)月

This is the VOA Special English Agriculture Report. Hogs at an Ohio farm Research shows that waste from pigs that are fed a special kind of corn may help a farmer's crops. And it also may help the environment. Any farmer who raises swine knows that

发表于:2019-01-11 / 阅读(255) / 评论(0) 分类 VOA慢速英语2008年(八)月

From VOA Learning English, this is the Health Lifestyle report. Garlic is one of the most common cooking ingredients around the world. Many dishes in Europe, Africa, Asia and the Americas use this strong-flavored vegetable. Garlic is similar to other

发表于:2019-01-12 / 阅读(241) / 评论(0) 分类 2016年VOA慢速英语(十二)月

By Peter Fedynsky Moscow 18 July 2007 Officials in Ukraine are assessing the damage of a train crash in western Ukraine that sent huge clouds of burning phosphorus billowing into the air. The accident, which took place Monday, is raising health conce

发表于:2019-01-12 / 阅读(197) / 评论(0) 分类 2007年VOA标准英语(七月)

MADRID, March 20 (Xinhua) -- Spanish ACB basketball side Unicaja Malaga had sacked coach Chus Mateo as a result of his team's disastrous run of recent results, local media reported Tuesday. He left the club after little more than a year in charge, af

发表于:2019-01-16 / 阅读(257) / 评论(0) 分类 英语新闻

MARY LOUISE KELLY, HOST: Summertime brings algae blooms to many parts of the country - those mats of bright green organisms that can blanket waterways. In places like Florida's Lake Okeechobee, the blooms hurt tourism. They kill fish. They threaten w

发表于:2019-01-17 / 阅读(193) / 评论(0) 分类 2018年NPR美国国家公共电台7月

Black Tongues and Stomach Aches Don: Oh, no, Ya?l, I think I'm having a medical emergency. Quick! Call an ambulance. Ya?l: A medical emergency, Don? Are you sure? You look fine to me! D: But I'm not. This morning, I had a terrible stomach ache. And n

发表于:2019-01-26 / 阅读(162) / 评论(0) 分类 英语听力文摘 English Digest

Sewage stinks. But bacteria can make it smell better. Oh, yeah? That's true. Certain forms of bacteria feasting on sewage give off hydrogen sulfide, a really malodorous chemical, and one of several that give sewage its pleasing smell. In general this

发表于:2019-01-26 / 阅读(177) / 评论(0) 分类 英语听力文摘 English Digest

The commercial potential for the stuffwhich soon became known as phosphorus, from Greek and Latin roots meaning light bearingwas not lost on eager businesspeople, but the difficulties of manufacture made it too costly to exploit. An ounce of phosphor

发表于:2019-01-29 / 阅读(181) / 评论(0) 分类 万物简史

10 Getting The Lead Out 第十章 把铅撵出去 In the late 1940s, a graduate student at the University of Chicago named Clair Patterson (who was, first name notwithstanding, an Iowa farm boy by origin) was using a new method of lead isotope measur

发表于:2019-02-17 / 阅读(240) / 评论(0) 分类 万物简史

Matches Striking matches, on this Moment of Science. Have you ever had a problem getting a match to light? If so, you might be using the wrong type of match. There are actually two different types of matches: safety matches and strike-anywhere matche

发表于:2019-02-26 / 阅读(195) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
acoustic surface-wave measurements
an infant in arms
anchebiosis
anhydrofructose
anthraxon hispidus mak.
arteria gastrica
asynchronous block transmission
bardjat (chad)
bathmat
beta-peptides
blathery
Blessed tomb
branch off
bulk cargo container
burning bar
certified check
characteristic luminescence
chloroform extract
clustereth
cremorne
cryosaunas
Curicó, L.
dashpot-type shock absorber
demagoguism
designated hitter
devil strip
distribution piller
divorcie
down valley wind
drug problem
enter
erect up for
exploitation of an invention
exploration procedures
fat extender
fire gilding
freezing polymerization
gastrectomy
God helps them that help themselves
hanessian
hardaway
heavy material
hot-flue
Hydroxylidestrenolied
hyraid
inlaw
introvertive
jettying
Koussili
laser bean
lata-type
leukocytolytic
Longjing Township
lunisolar calendars
main brasses
marteir
mesorhythm
minchers
minieres
nightblindness
ofice
Oligostachyum glabrescens
OOW
orientohemiteles ovatus
Orixa japonica Tgunb.
osmadizone
palooka
paper-cutters
partitioned bucket
petite cabriole
pianocoder
pivotal method
pluckiest
post-seismic
Quita Sueňo Bk.
remembred
Reporters Without Borders
semi-structured
sign someone off
small aircraft carrier
software modifiability
steeple-compound turbine
sticky-tapes
submerged bearing
supplement of angle
supported beam
Sǒdusu
tankias
tap sth out
tape player
technical analyses
three-day strength
three-stage stereocomparator
time-sharing circuit
trypanosyllis zebra
tsetse-fly disease
unsunned
usus fructus
well-drilled
work of fiction
yewei