We can talk about the half-life of a radioactive isotope, and indeed we can measure and state very very precisely what that half-life is. 我们可以谈论放射性同位素的半衰期,我们确实可以非常准确地测量和描述半衰期是什么。
A radioactive, inert, gaseous isotope of radon, with a half-life of3.92 seconds. 氡的一种放射性的,惰性的和气态的同位素,其半衰期为3。92秒。
MEASUREMENT OF NUMBER OF RADIOACTIVE ATOMS AND HALF-LIFE(ⅳ)& Applications and Accuracy of N_0 放射性绝对测量和半衰期(Ⅳ)&N0的应用和准确度
Cesium is the main releasing heat result in radioactive waste liquid, because cesium half-life is relatively long, it is relatively great to endanger the human body, so seems particularly important to the treatment of the radioactive waste liquid containing cesium. 铯是高放废液中主要的释热产物,由于铯半衰期较长,对人体危害较大,因此对含铯的放射性废液的处理和处置显得尤为重要。