radioactive material meaning in English

放射性物质，放射性材料

Because of the continuous decay, the quantity of radioactive material and the rate of emission of radiation decrease steadily .
由于连续衰变的结果，放射性物质的数量，辐射发射率都逐渐下降。
A person handling radioactive materials has no way of telling whether he is touching something too "hot" for safety .
一个处理放射性物质的人却无法断定他是否正在接触某种太“热”的危及安全的东西。
In the deep mantle the highest possible concentration of radioactive materials is limited by the condition demanding temperatures below the melting point .
在地幔深部，放射物质最高的可能浓度受溶点以下的温度条件所限制。
Regulations for the safe transport of radioactive material
放射性物质安全运输规程
General rules for sampling airborne radioactive materials
气载放射性物质取样一般规定

More: Next