Volatile toxic gases may with the passage of time, gradually reduced to the level of security, but not because of time indoor radon reduction, and its parent radionuclide half-life is very long.
英
美
释义
挥发性有害气体可能随着时间的推移,逐渐降低到安全水平,但室内氡不会由于时间的推移而减少,而且它的母体核素半衰期很长。
把海词放在桌面上,查词最方便
触屏版
|
电脑版
©2003 - 2024 海词词典(Dict.cn)
立即下载