From the generalized model of a radioactive decay chain,a new approach is presented for solving the equations of succesive decay.
从放射性衰变链的一般物理模型出发，利用Ｅ因子函数及其递推关系，给出了求解放射性递次衰变方程的一种新方法，这种解法数学上容易推导，物理上直观易懂，便于在计算机程序上实现。
Due to radioactivity decay phenomenon of radioactivity measuring nuclide,Rn and its daughter radioactive decay and statistical fluctuation characteristics,this paper designs a program on the measurement of Rn data correction time by VB.
由于放射性测量中核素的放射性衰变现象,氡及其子体放射性衰变和统计涨落特点,运用VB技术对测氡数据时间校正进行程序设计。
Based on the geology and tectonics of the Suichuan Reshui strike slip fault zone(SRF),and the Lujing uranium ore field located in the pull apart stepover of SRF,and abundances of heat producing elements(U,Th,K) of the Yanshanian granite hosting the uranium deposits,the radiogenic heat of the granite is calculated.
根据遂川—热水走滑断裂及其拉分叠接带的鹿井铀矿田的地质构造、矿化特征和产铀花岗岩中生热元素的平均含量 ,对矿田内花岗岩的放射性衰变热进行了初步的计算。
radiation resulting from radioactive decay.
由放射性衰变产生的辐射。
However, some of the minerals contain xenon isotopes unlike those usually produced by radioactive decay of uranium.
然而，有些含氙同位素的矿物并非如此，是由铀的放射性衰变产生的。
The radioactive transformation giving rise to these electrons was known as beta decay.
产生这种电子的放射性变化，称为β衰变。
radioactive recoi
放射性衰变引起的反冲
Unlike helium-4, it cannot be produced by radioactive decay.
与氦－4不同之处是，氦－3不能由放射性衰变产生。
At the same time, deep underground, the decay of radioactive elements produced heat at rates more than six times greater than they do today.
同时，地底深处的放射性元素衰变，产生热的速率是今日的六倍以上。
any of several radioactive gases that are isotopes of radon and are products of radioactive decay.
"几种氡的同位素的放射性气体,是放射性物质衰变的产物."
The immediate product of the radioactive decay of an element.
继承元素某种元素放射性衰变的直接产物
radioactive decay with emission of carbon nuclei
碳核发射放射性衰变
A stream of particles or electromagnetic waves emitted by the atoms and molecules of a radioactive substance as a result of nuclear decay.
核衰变产生的微粒或电磁波放射物的原子或分子由于核衰变放出的一束微粒或电磁波
the radiation of alpha particles during radioactive decay.
在放射性衰变的过程中放出α粒子的辐射。
radiation of beta particles during radioactive decay.
在放射性衰变的过程中放出β粒子的辐射。
beta-plus decay radioisotope
正β衰变放射性同位素
decay radioisotope
β衰变放射性同位素 β
beta-minus decay radioisotope
负β衰变放射性同位素
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
Like Galileo, Cassini is powered by the natural decay of the radioactive element plutonium, which generates heat that is then converted to electricity.
如同伽利略号，卡西尼号的能源来自放射性元素钸的自然衰变，产生热后再转换成电。
To disintegrate or diminish by radioactive decay.
衰变由于放射性衰变而解体或缩小