The Air Kerma Rate of 125I sources is determined by the well-type ionization chamber.Thereafter the apparent activity of 125I sources is calculated and measured results are anylyzed.
采用井型电离室测定125I粒子源的空气比释动
，
算出125I粒子源的表观活度（又称等效活度），并对结果行了分析。
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Outside of this device these electrons and positively charged atmospheric ions would eventually recombine and become neutral, however in this contraption, called an ionization chamber, we want to use alpha decay to help us detect smoke.
个装置之外， 些电
和带正电的大气离最终会重新结合并变为
性，然而个称为电离室的装置，
们想使用α衰变来帮助们探测烟雾。
, 
