... 放射性气体消除 radioactive gas removal 天然放射性气体natural radioactive gas 气体色谱 gas chromatogram ...
双语例句
1
Radon is a naturalradioactivegas that emanates from the ground into the air.
氡是一种放射性的自然气体，从地下散发到空气中。
2
Radon is a naturalradioactivegas that occurs at higher than normal levels in certain parts of the U.S..
氡是一种天然的放射性气体，在美国某些地区浓度高于平均水平。
3
For most people more than half of their natural background radiation dose comes from radon, a radioactivegas that can accumulate in homes, schools and workplaces.