In order to achieve long-term and effective measurement of 220Rn progeny, people have hoped to use the method to evaluat......

According to recent researches, the value of dose conversion coefficient of 220Rn progeny is 1 or more times higher than......

目的测量非铀矿山^222Rn、^220Rn水平，了解我国矿山氡超标比率和矿工受照剂量。方法根据典型抽样方法选择12个省17类44座矿山，采用LD......