1.
The half-life of francium is 22 minutes.
钫的半衰期是22分钟。
2.
radioactive half life
放射性物质的半衰期
3.
half-life of recurrent selection process
轮回选择过程的半衰期
4.
Half-lives of the newly synthesized nuclei in~(263)Hs and ~(260)Bhα-decay chains
新核素~(263)Hs,~(260)Bh及其α衰变链上核素的半衰期
5.
The time required for half the nuclei in a sample of a specific isotopic species to undergo radioactive decay.
半衰期放射性样品的原子核经历一半放射性衰变所需要的时间
6.
It is not necessary to wait until half of a sample has decayed in order to measure the halflife.
不必一直等到样品衰变一半之后才测量它的半衰期。
7.
Half-life of radioactive element carbon-14 is 5730 year.
放射性元素碳-14的半衰期为5730年。
8.
The half life of the uncharged pion is 6×??.
中性兀介子的半衰期为6×?得搿?/UK>
9.
It has a half-life of about 41/2 billion years.
它的半衰期大约为45亿年。
10.
A very useful quantity is the half-time for the reaction.
一个很有用的量是反应的半衰期。
11.
Theoretical Evaluation on Expansion Ratio and Half-time of Foamed Asphalt
泡沫沥青膨胀率和半衰期的理论测算
12.
Half-life determination of fission products ~(94)Y and ~(95)Y
裂变产物~(94)Y和~(95)Y半衰期的测定
13.
The measurement of the half-life of ~(151)Sm by liquid scintillation counter
液闪法测定~(151)Sm的半衰期
14.
Measurement of ~(198)Auβ~--Decay Half-Life in Metal Au at Low Temperature
低温金属环境中~(198)Au半衰期的测量
15.
Half-life:A New Way of Research into Virtual Learning Community
“半衰期”:虚拟学习社区研究的新方法
16.
Half-lives are characteristic properties of the various unstable atomic nuclei and the particular way in which they decay. Alpha decay and Beta decay are generally slower processes than gamma decay.
半衰期是各种不稳定原子核的特性,是它们衰变的特殊方式。α衰变和β衰变一般比γ衰变为慢。
17.
An Analysis of the Cited Half-life of Chinese Social-Science Periodicals;
中国人文社会科学期刊被引半衰期分析研究
18.
And the point is, that half-life stays the same forever, even though atoms are decaying all the time.
重点是，半衰期永远是一样的，即使原子一直在衰减。