音标:[ˈmetl ˈætəm] ;
碱金属原子

A Century of Memories (1940-1949) On the first Sunday in December 1941, Americans were doing what Americans did on any normal Sunday.

发表于:2018-11-28 / 阅读(193) / 评论(0) 分类 疯狂英语2003年

By Gary Garriott Broadcast: November 3, 2003 This is Steve Ember with the VOA Special English Development Report. People have been recycling metals for hundreds of years. Today, re-using metal waste o

发表于:2018-12-01 / 阅读(259) / 评论(0) 分类 VOA2003(下)-发展与科学

[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(108) / 评论(0) 分类 赖世雄学英语第四册

雅思听力场景词汇:化学词汇 在雅思听力考试场景中,化学相关的场景的词汇较为生涩,平时生活中可能也运用得比较少,以下的词汇供大家参考喔。 molecule 分子 particle 粒子 ion 离子 particle

发表于:2018-12-19 / 阅读(158) / 评论(0) 分类 雅思英语

Why Diamonds Really Are Forever Diamonds are forever they say, and this is why: diamonds are the hardest substance known to exist. Nothing would scratch or damage a diamond,While a diamond can scratch any other material on the earth. Everything is

发表于:2018-12-27 / 阅读(83) / 评论(0) 分类 英语时差8,16

Unit 6 TEXT I Atomic Cars Text Every motorist dreams of a car of the future that does not have to be refuelled every few hundred miles, a car that will cost little to run because there is no outlay on

发表于:2018-12-29 / 阅读(126) / 评论(0) 分类 新编大学英语教程

By Roger Hsu Mephis, Tennessee 17 August 2006 watch Museum report The National Ornamental Metal Museum in Memphis is devoted to the conservation and advancement of metalwork. It is a place where metal smiths become synonymous with artists and where

发表于:2019-01-06 / 阅读(221) / 评论(0) 分类 2006年VOA标准英语(八月)

We have bigger houses and smaller families; more conveniences, but less time; we have more degrees, but less common sense; more knowledge, but less judgement; more experts, but more problems; more medicine, but less wellness. We have multiplied our p

发表于:2019-01-08 / 阅读(86) / 评论(0) 分类 英语美文

[全屏观看] 点击右键- 另存为 可保存这个Flash影片 Description: Metal Sonic is flying through space and comes to an asteroid field, you need to help him blast his way through without getting hit or its game over. Instructions: Move: Up

发表于:2019-01-08 / 阅读(207) / 评论(0) 分类 Daily Free Games

We have multiplied our possessions, but reduced our values. We talk too much, love too little and lie too often. We've learned how to make a living, but not a life; we've added years to life, not life to years. We have taller buildings, but shorter t

发表于:2019-01-11 / 阅读(119) / 评论(0) 分类 阅读空间

Staying with the precious metal, and Chinas largest gold company says the country will surpass India to become the top consumer of gold in the world. In the first three quarters of this year, China produced 284 tons of the yellow metal, a nine percen

发表于:2019-01-11 / 阅读(144) / 评论(0) 分类 英语演讲

But this still doesn't explain why light is able to pass through glass rather than being absorbed as with most solids. 但是这还是不能解释为什么光可以穿透玻璃而不是像其他大多固体那样被吸收。 For that, we need to go a

发表于:2019-01-17 / 阅读(115) / 评论(0) 分类 TED演讲教育篇

(一)a is n times as small (light,slow,)as b. a is n times smaller (lighter, slower,) than b. 以上两句均应译为:a的大小(重量,速度,)是b的1/n[或a比b小(轻,慢,)(n-1)/n]. e.g. The hydrogen atom is near1y l6 times as

发表于:2019-01-17 / 阅读(100) / 评论(0) 分类 英语口译

英语中表示倍数减少的表达方法(一)a is n times as small (light,slow,)as b. a is n times smaller (lighter, slower,) than b. 以上两句均应译为:a的大小(重量,速度,)是b的1/n[或a比b小(轻,慢,)(n-1)/n]. e.g

发表于:2019-01-17 / 阅读(120) / 评论(0) 分类 英语口译

Science and Technology Fundamental physics Antimatter of fact 科技 基础物理 反物质研究突飞猛进 Researchers at CERN have held on to anti-atoms for a full quarter of an hour 欧洲核子研究中心的科研人员让反原子颗粒存在时

发表于:2019-01-26 / 阅读(92) / 评论(0) 分类 经济学人科技系列

Fortunately more sober types were at work elsewhere. In 1808, a dour Quaker named John Dalton became the first person to intimate the nature of an atom (progress that will be discussed more completely a little further on), and in 1811 an Italian with

发表于:2019-01-29 / 阅读(104) / 评论(0) 分类 万物简史

The structure of atoms and the significance of protons will come in a following chapter, so for the moment all that is necessary is to appreciate the organizing principle: hydrogen has just one proton, and so it has an atomic number of one and comes

发表于:2019-01-29 / 阅读(110) / 评论(0) 分类 万物简史

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(103) / 评论(0) 分类 英语新闻

俗话说:一母生九子,九子各不同。这句话在我邻居家孩子的身上体现得淋漓尽致。大女儿心灵手巧,做什么像什么;而二女儿却刚好相反,总是笨手笨脚。All thumbs就用来形容她这种笨手笨脚

发表于:2019-02-06 / 阅读(107) / 评论(0) 分类 实用英语

1.心事重重 some thing weighs heavily on ones mind The boss is quite down these days. He seems to have something weighing heavily on his mind. 老板这几天沉默寡言,看起来好像是心事重重的 2.苦苦哀求 press ones suit She press

发表于:2019-02-19 / 阅读(118) / 评论(0) 分类 英语口语
学英语单词
accumulation region
affinity electron microscopy
amorphous diamond
anaesthesia breathing system
azacyclobutadiene
backgrounded
bank of issue
baywood
be confound at
become operative
bespittled
bicycle landing gear
Booden
c-buss
CaM41
cap code
cartilaginous tympanic annulus
cat-ear
cboe
chokeberries
clearance loss
Core Sprayer
corpuscular eclipse
dementialike
dial gauge micrometer
Diekirch
dihedral vane
direct subject
dist(o)-
DM - direct message
double-pulsed
draw applause
dualayer solution
dull black
ebonite bush
ECHODIDE
faba bean
fearlessly
first pressing
floutaramite
four-velocity
gathering motor
girlzine
Great Lake
hadija
haematoxin
hungerer
hypocentre(hypocentrum)
in-line hologrammetry
Independence Fd.
index-link
indoor shot
inner electrolyte
Kiviuq
large batch
ligamenta serosum
line contact bank
liquation hearth
longissimus thoracis
loyalist volunteer forces
mammoplasty
master cast
n-decision problem
native ironmaking process
natural period of oscillations
nullo flight
P-TEFb
phase shift
Phthalaethamidum
productivity bonus
programmed readability
pulse size
rareliest
reacting capacity
recoupling
removable component
rhachisphora sanhsiaensis
root mean square error
root-mean-square prediction error
sample passer
sand-prone seismic facies
scrabbing
sloping bench
solution calorimeter
spaghetti meat sauce
spatial variable
squamosal suture
Star'
strike-rates
substratum for waterproofing
surface property
tailfin
Tegernsee
Tonga Islands
Top-set-bed
tropical marine biology
unclogged
walewise
wave disturbance apparatus
wired logic
xenos
Zhitom