[化] 三硫化四磷

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(38) / 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(32) / 评论(0) 分类 2018年NPR美国国家公共电台2月

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(60) / 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(62) / 评论(0) 分类 VOA慢速英语2008年(八)月

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(51) / 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(60) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
alphanumeric visual display
antarctic peninsulas
antivitamin
applyed
artificialness
AT-7
banking licence
banner barter transaction
batch operating system
business cycle model
cafe coach
caustozooliths
cheapishly
chilled hold
clover honey
collector drift region
colonial life
cross section for neutrons
Delhi sultanate
Donegal, Co.
Dorothy L. Sayers
drawing fires
echo pulse
emphysematous chest
equality circuit
equidensitometry
evidence of negligence
export petroleom grade
festschrifts
fluosolid roasting
flush panelled door
getting rolling
goods for everyday consumption
granuloma of pudenda
gusset connector
Hangal
have a broom up one's ass
Hegglin
hemidecorticate
Ibajay
jhw
kennelly heaviside layer
kernel of a linear transtormation
kilo-calorie
lancaidin
lead monoiodide
lickety
lobulatums
magat
main and return cm
marine officer's certificate
maritime ports convention
microdissect
Monterrubio
Myrtaceae
N-benzoylglycine
narrow-band charactascope
Neurohypophysin
nonstarched
odontoma adamantinum
orthogonal matrice
oxylate
palaetiologists
para rubber seed oil
Patent Office Classification System
phenotypic assortative mating'
preliminary high humidity treatment
prizer fellow
pulverized dried algae
quirandine
rank defect network adjustment
reference performance
regular cracks
ricola
right view
screen overlay
semicut set
shell and tube heat exchange
silencer-filter
smectic compound
social overhead investment
softening test
solitarness
steering pointer
Surroy
synchronized algorithm
teaching load
therebeside
thiophosphorylation
tower acid system
transpulmonary pressure
true believer syndrome
two-base hits
Tāntpur
urban managers
velum medullare anterius
waerebeek
water pressure drop
way down
welders
writing program
Zeuxine tenuifolia