氡子体 meaning in Chinese

radon daughter

Radon and radondaughter meters and monitors ? generalrequirements
氡及氡子体测量仪与监测仪一般要求
Estimation standards of personal cumulative exposure to radon decay products for miners
矿工氡子体个人累积暴露量估算规范
Radiation protection instrumentation - radon and radon decay product measuring instruments - part2 : specific requirements for radon measruing instruments
辐射防护用氡及氡子体测量仪第2部分：氡测量仪的特殊要求
According to the findings of a study by the city polytechnic university to measure the levels of radon daughter which is a potentially lung - cancer - causing radioactive substance in mass transit railway stations in the territory , 23 out of the 31 underground mtr stations have levels of radon daughters exceeding the average level in the world
根据城市理工大学一项测量本港地下铁路车站“地铁站”内含有可引致肺癌的辐射性物质氡子体水平的研究结果，在全港31个建于地底的地铁站中，有23个所含的氡子