[化] 主价; 主要化合价

chief valence的用法和样例:

例句

  1. Every element tends to satisfy both its primary and secondary valence.每一元素倾向于既满足它的主价又要满足它的副价。

We present the short story The Ransom of Red Chief by O. Henry. This story was adapted for VOA Learning English by Shelley Gollust. It was produced by Lawan Davis. Here is Shep ONeal with the story. It looked like a good thing. But wait till I tell y

发表于:2018-12-08 / 阅读(87) / 评论(0) 分类 2018年VOA慢速英语(十一)月

We present the short story The Ransom of Red Chief by O. Henry. Here is Shep ONeal with the story. (MUSIC) SHEP ONEAL: It looked like a good thing. But wait till I tell you. We were down south, in Alabama Bill Driscoll and myself when this kidnapping

发表于:2018-12-15 / 阅读(92) / 评论(0) 分类 2011年VOA慢速英语(一)月

By Barbara Dash Broacast: December 22, 2003 (THEME) ANNOUNCER: People in America -- a program in Special English by the Voice of America. Every week at this time, we tell the story of a man or a woman

发表于:2018-12-18 / 阅读(108) / 评论(0) 分类 VOA2003(下)-美国人文故事

It looked like a good thing. But wait till I tell you. We were down south, in Alabama Bill Driscoll and myself when this kidnapping idea struck us. There was a town down there, as flat as a pancake, and called Summit. Bill and I had about $600. We ne

发表于:2019-01-03 / 阅读(844) / 评论(0) 分类 2017年VOA慢速英语(十一)月

UNITED NATIONS, Aug. 13 (Xinhua) -- UN Secretary-general Ban Ki- moon will travel to Pakistan(巴基斯坦) to visit the country's flood-ravaged areas on Saturday, UN spokesman Martin Nesirky said here on Friday. The spokesman noted, however, tha

发表于:2019-01-07 / 阅读(120) / 评论(0) 分类 英语新闻

NEW DELHI, Nov. 21 (Xinhua) -- Visiting chief of the United States Central Intelligence Agency (CIA) ((美国)中央情报局 ) Leon Panetta Saturday met Indian National Security Advisor M.K. Narayanan here to discuss terrorism in Pakistan and Afg

发表于:2019-01-07 / 阅读(100) / 评论(0) 分类 英语新闻

PEOPLE IN AMERICA - One of the leaders of the Indian resistance, Apache chief Cochise VOICE ONE: PEOPLE IN AMERICA, a program in Special English on the Voice of America. (THEME) During the Eighteenth Century, Indians tried to halt the move of white s

发表于:2019-01-12 / 阅读(129) / 评论(0) 分类 2013年VOA慢速英语(四)月

People in America - Chief Joseph, 1840-1904: A Great Nez Perce Indian Chief SHEP ONEAL: People in America -- a program in Special English by the Voice of America. Every week at this time, we tell the story of a man or a woman who played an important

发表于:2019-01-12 / 阅读(141) / 评论(0) 分类 2012年VOA慢速英语(四)月

ECONOMICS REPORT - A New Chief for the Securities and Exchange Commission By Mario Ritter Broadcast: Friday, June 10, 2005 I'm Gwen Outen with the VOA Special English Economics Report. The Securities

发表于:2019-01-30 / 阅读(97) / 评论(0) 分类 健康与经济

IN THE NEWS - Hong Kong Chief Executive Tung Chee-hwa By Jerilyn Watson Broadcast: Saturday, March 05, 2005 Jerilyn Watson I'm Steve Ember with In the News, in VOA Special English. All week there was

发表于:2019-01-30 / 阅读(115) / 评论(0) 分类 教育与新闻

ECONOMICS REPORT - Will Former Exchange Chief Have to Return Pay? By Mario Ritter Broadcast: Friday, June 04, 2004 This is Bob Doughty with the VOA Special English Economics Report. Not many people wo

发表于:2019-01-30 / 阅读(120) / 评论(0) 分类 健康与经济

A blonde was being interviewed by the Chief of Police for an opening in the local Police Department. The chief said that before I hire you I have to ask a few questions. Chief: First how much is 1 and 1. Blonde ElevenChief: Well I guess I will accept

发表于:2019-02-05 / 阅读(145) / 评论(0) 分类 趣味英语

Europe's chief banker says the current operation of the 17-nation euro currency bloc is unsustainable and that it must create a new vision of how it will manage its affairs in the coming years. The head of the European Central Bank, Mario Draghi, sai

发表于:2019-02-05 / 阅读(91) / 评论(0) 分类 英语新闻

BEIJING, April 10 (Xinhua) -- Premier Wen Jiabao met with Leung Chun-ying, chief executive-elect of the Hong Kong Special Administrative Region (HKSAR), Tuesday in Beijing. Wen, on behalf of the State Council, awarded the official certificate of appo

发表于:2019-02-07 / 阅读(115) / 评论(0) 分类 英语新闻

UNITED NATIONS, April 1 (Xinhua) -- UN Secretary-General Ban Ki- moon on Friday called for greater public awareness of autism, in order to fight the stigma and discrimination(区别,区分 ) facing those who suffer from the disorder. The statemen

发表于:2019-02-07 / 阅读(122) / 评论(0) 分类 英语新闻

BEIJING, July 24 (Xinhua) -- Chinese President Hu Jintao said Friday that the role of the United Nations should be bolstered in handling the global economic downturn, achieving sustainable development, and safeguarding world peace and security. As a

发表于:2019-02-08 / 阅读(82) / 评论(0) 分类 英语新闻

Peruvian President-elect Ollanta Humala says he will reappoint Julio Velarde as central bank chief, in an apparent signal to investors that the country's current economic policies will continue. President-elect Humala made the comment in an interview

发表于:2019-02-17 / 阅读(106) / 评论(0) 分类 英语新闻

BEIJING, April 11 (Xinhua) -- President Hu Jintao Wednesday told Leung Chun-ying, the newly appointed chief executive of the Hong Kong Special Administrative Region (HKSAR), that the central government has high hopes on him and will give its all-out

发表于:2019-02-17 / 阅读(89) / 评论(0) 分类 英语新闻

虚 拟 语 气 虚拟语气是一种特殊的动词形式,表示所说的话不是一个事实,而只是一种假设,愿望,建议,怀疑,猜测或不大可能实现的空想。 I.虚拟语气用在条件状语从句中 虚拟语气用在条

发表于:2019-02-18 / 阅读(69) / 评论(0) 分类 英语新闻

White House Chief of Staff William Daley says he is confident the United States will not default on its debt. Daley told CNBC television Tuesday that there are a lot of debt reduction plans on the table and everyone is stressed as the August 2 deadli

发表于:2019-02-18 / 阅读(91) / 评论(0) 分类 英语新闻
学英语单词
ac power line
achromacyte
anaematopoietic anemia
arachyl alcohol
arf
army-navy standard parts
Aughrim
Boehmeria allophylla
bond interest receivable
branchiopodan
chemise cagoule
Chervlennaya
chopping bit
clinker breaker
close-packeds
cloudmachine
co-educate
copper-oxidized milk
corifolius
cork finish
Dacun Township
demonstrative-pronoun
desterilization of reserve
dip offset
Elaeagnus umbellata
epicenter location routine
first order levelling
fungillus
ganoins
gers-
Giemsaband
glycogen
Grey Is.
ground arch
hecto-meters
hinkie pinkies
hot-wires
huang scattering!
hull frame
humanzee
hydraulic distribution manifold
infacility
italianizer
jutras
Laascaanood
LCL car
letches
livelihed
low earth orbit
lugene
manelessness
marmorosis
mean epoch
methyl chlorethyl-cyclohexyl-nitrosourea
mis-spending
miscounted
monocentric cities
munies
N-ACETYL-L-METHIONINE
notaires
object-oriented representations
oceangraphic chart
ordinal space
overstruck
panoramic translating
peralous
period pieces
Popes
positive getropism
postage free
Potamocypris
pre-hospitals
preohmic contact
Presidents' Day
primary securities market
propeller shop
quick-stop
ratio of locomotives under repair
renberg
revissar
rhachialbuminimeter
rostone
scaredy pants
self-editor
skin senses
srbs
steam - jet
steam-mechanical mixed atomizer
storewidth
straight hair nevus
strata dentatum epidermidis
sync selector
theme line
third party service provider
thorium decay series
thrust specific fuel consumption
uncoopered
unloyal
useter
white-holes
wreckle
xylotrechus magnicollis