radioactive emanation
... radioactive emanation 放射性射气 radioactive indicator 放射性示踪剂 radioactive isotope 放射性同位素 ...
active emanation
... active element 活性元素有源元件 active emanation 放射性射气 active emitting material 活性辐射物质 ...
emanation radioactive
... [航] induction blowdown wind tunnel 放射性射气 radioactive emanation ; active emanation ; emanation radioactive 射气计 emanometer ...