音标:[trænˈziʃən ˈmetl] ;
过渡金属元素

transition metal的用法和样例:

例句

用作名词(n.)
  1. Physics of Transition metal Oxides.过渡金属氧化物物理学。
  2. The transition metal catalysts for hydrosilation are reviewed in this paper.本文评论了用于硅氢加成反应的过渡金属催化剂。

Grammar Girl here. Today, Bonnie Trenga will help us choose better transition words. This article could make you a tad hungry, because today were comparing the art of writing to the art of making a sandwich. In fact, just for today, we might need to

发表于:2019-01-02 / 阅读(58) / 评论(0) 分类 英语语法 Grammar Girl

In 1963, President John Kennedy gave a famous speech at American University. In the speech, Kennedy said the following lines: Our problems are manmade; therefore, they can be solved by man. And man can be as big as he wants. No problem of human desti

发表于:2019-01-03 / 阅读(51) / 评论(0) 分类 2017年VOA慢速英语(九)月

[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(134) / 评论(0) 分类 Daily Free Games

今天我们要学的词是transition。 Transition, 是过渡的意思。A smooth transition, 就是平稳过渡。古巴总统卡斯特罗宣布辞去国务委员会主席的职务。美国总统布什表示,希望古巴能由此开始向民主过渡

发表于:2019-01-25 / 阅读(46) / 评论(0) 分类 英语每日一词

By Al Pessin Pentagon 19 October 2007 The U.S. military's effort to rebuild major infrastructure in Iraq will be winding down during the coming year, leaving the Iraqi government to fund the effort and to find engineers capable of handling the projec

发表于:2019-01-31 / 阅读(66) / 评论(0) 分类 2007年VOA常速英语(十月)

NATO's secretary-general says foreign forces in Afghanistan will remain on combat duty during the scheduled transition to Afghan security control in 2014. That statement by Anders Fogh Rasmussen came after U.S. Defense Secretary Leon Panetta said Ame

发表于:2019-02-08 / 阅读(54) / 评论(0) 分类 英语新闻
学英语单词
a son of the morning
acrobystia
adnubilated
aggravatives
apothecaries' system
babycake
baeksu (paeksu)
bairdii
Baktaloranthaza
balanced-symmetric laminate
balling-up
bioregionalization
boarded up
Boring-powder
boy toys
brand purchase probability model
brush spring adjuster
buccolingual relationship
car-seats
cash-for-gold
character-pattern descriptor
color television picture
cool light
crash down
damp proof insulation
deliciousss
divinity college
durning
dust size distribution
entoloma conferendum
err on the right side
exhaust-gas analyzer
exorista fuscipennis
explosive dispersion
extended field attribute
extreme
Faraday shield
file extended control block
flat picture
foreshadowing
front axle stay rod
full dilatation of cervix
genome project
git
hand-bells
hatch awning
heptaglots
Houston Lake
hyperalkaline
interlacustrine
interofector
Kothar
least cost route
Limai
lithium mica
littin'
lubricant cell
martiniana
matzerath
mimology
mis-castings
muslim calendars
nguzas
nongynecological
Novoorenburg
osculated
overyearing
paint in one's true colour
play my flute
primary sodium phosphate
pulse modulation transmission
remotely piloted helicopter
rhombic crystal system
ribbon like keratitis
sasaokaea aomoriensis
self absorbed
shia
sotie
stepping register
subterfluent
subvariety
swains
swwas
sylvatron
ta wei chou
take into
terrain-avoidance radar
trigger rod
unexploded bomb
unvolatized
uralmash
vehicle fuel consumption per hundred ton-kilometers
velveut
voice encoder
Vélingara Pakane
western big-eared bats
wet on dry
woke up
Y-channel
Yareyal, R.
yotta-metre