daughter substance 中文意思是什麼

daughter substance 解釋
子體物質
  • daughter : n 1 女兒 (opp son)。2 (某地的)婦女。3 【生物學】子體,子代。4 【原子能】子核;產物。adj 1 女...
  • substance : n 1 物質,材料;【哲學】實體,本體,本質 (opp appearance)。2 實質,內容;(故事等的)要旨,要領...
  1. 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

    根據城市理工大學一項測量本港地下鐵路車站「地鐵站」內含有可引致肺癌的輻射性物質氡子體水平的研究結果,在全港31個建於地底的地鐵站中,有23個所含的氡子
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