half-life信息详情
n.[核]半衰期
half life───n.半衰期；半存留期；半排出期；n.（放射性）半衰期
conscript half life───义务兵半衰期
half life calculator───半衰期计算器
uranium half-life───铀半衰期
half life 2───半衰期2
elimination half life───[医]消除半衰期
tartrate half life───酒石酸半衰期
half-and-half───n.两者各半之混合物；（加入咖啡、牛奶等的）稀奶油；adv.各半，对等地；adj.两种成分各半的；不明确的
half and half───一半一半；各占一半；各半
However, if the half-life is increased, the situation changes.───然而，如果半衰期增加，情况会改变。
Business opportunities have a half-life, just like uranium.───商业机会有半衰期，就像铀一样。
Radioactive iodine has a half-life of eight days and decays naturally within weeks.───放射性碘的半衰期为八天，几周内自然衰变。
But the half-life of market domination seems to be dwindling.───但是似乎这些公司的垄断半衰期一直在缩短。
It accumulates in the cooling water of nuclear reactors and is often vented in small amounts to the environment. Its half-life is 12 years.───氚聚集在核反应堆的冷却水中，通常以微量排放到环境中，其半衰期为12年。
When Hazen's team put oil samples in a laboratory setup designed to mimic Gulf conditions, it had a half-life of between one and six days.───当黒曾团队将油样放入模拟的海湾背景下的实验室，油样有一个在一天和六天之间的半衰期。
"Half-Life 2" , which came out in 2004, took six years to develop, whereas new episodes can be put together in a year or so.───2004年发行的《半条命2》花费了六年时间开发，而游戏的新章节仅需一年左右就可完工。
In particular, the half-life of ethyl mercury is short (less than 1 week) compared with that of methyl mercury (1. 5 Months).───特别是乙基汞的半衰期较短（少于1周），而甲基汞的半衰期为1.5个月。
Furthermore, the long half-life of the metabolites could cause their accumulation and induce apparent injuries of target organs.───而且，此代谢物的半衰期极长。故极易累积于体内造成标的器官明显的伤害。
The biggest culprit is caesium-137, which has a half-life of 30 years.
The half-life of a radioactive substance is the time interval taken for the radiant species present to lose half its radioactivity.
The more complete descriptive term is drug elimination half-life.
It may also prolong the half-life of some concomitantly administered drugs.
Uranium-238 decays more quickly, with a half-life of 4.5 billion years, and can therefore date the star more precisely.
Since tritium has a half-life of only a few years, it can not be stored for long periods of time.
But it has a half-life of just 140 days so there can be little delay manufacture and its incorporation into a bomb.
No one has a long half-life as the star of the program.
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