half life of decomposition

The topological research of photolysis half-lives of PCDFs adsorbed on spruce needles and fly ash surfaces

多氯代二苯并呋喃光解半衰期的拓扑研究

Application of modified Cp_EA-PLS to QSAR of direct photolysis half-lives of PAHs

修正Cp_EA-PLS用于多环芳烃光解半衰期QSAR的研究

The topological research of photolysis half-lives of PCDFs adsorbed on spruce needles and fly ash surfaces

多氯代二苯并呋喃光解半衰期的拓扑研究

4 The half angle of divergence ah should not exceed 9°, the tenth angle of divergence az should not exceed 14°.

光线强度的半衰减角应不超过9°，光线强度1/10衰减解应不超过14°。

The half-life of francium is 22 minutes.

钫的半衰期是22分钟。

radioactive half life

放射性物质的半衰期

half-life of recurrent selection process

轮回选择过程的半衰期

Objective: To determine the numerical value of light dense of sodium salicylate by colorimetric analysis, and calculate its plasma half life.

目的:用比色法测定水杨酸钠的光密度值,并计算血浆半衰期。

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

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

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。

Half-life of radioactive element carbon-14 is 5730 year.

放射性元素碳-14的半衰期为5730年。

The half life of the uncharged pion is 6×??.

中性兀介子的半衰期为6×?得搿?/UK>

It has a half-life of about 41/2 billion years.

它的半衰期大约为45亿年。

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。

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

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

The measurement of the half-life of ~(151)Sm by liquid scintillation counter

液闪法测定~(151)Sm的半衰期

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