射野挡铅一般具有能够将相应能量的射线衰减95%的厚度，其厚度应该为

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='29312' and id < 2385709 and id<>'2385709' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29312' and id > 2385709 and id<>'2385709' order by id asc limit 5