放射性活度是指放射性元素或同位素每秒衰变的原子数,目前放射性活度的国际单位为贝克勒(Bq),也就是每秒有一个原子衰变,一克的镭放射性活度有3.7×1010Bq。
misc. radioactive activity
给出了一种用室内快速运动的球体作为放射性样品测量室内氡射气辐射活度的新方法。
A new method of measuring indoor radioactivity of radon is presented by using the indoor fast-moving ball as the sample of a radioactive substance.
本文介绍用于放射性核素活度绝对测量的相关方法的基本原理、应用及其优点。
This paper describes the principle and application of correlation method in the absolute radioactivity measurement.
结果:不同产地、不同品种的进口花岗岩石材样品中天然放射性核素的比活度与普通建筑材料比有较大差别。
The specific activities of natural radionuclides in import granites of different producing area and different varieties have biggish differences with those in normal building materials.
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