hazard substance

基本解釋

Chemical hazard: refers to the content of a chemical substance in more than the normal level and on human health hazards.
化學(xué)性危險：指食品中化學(xué)物質(zhì)的含量超過正常水平竝對人類健康有危害。
Results The proportion in senior students was higher than in junior students for the students who knew that there was hazard substance in cigarette.
結(jié)果高二組學(xué)生對於菸草中含有的有害物質(zhì)知曉率高於初二組；
The nation has established the identification standard of major hazards, and the identification basis is the quantity of hazard substance. The standard is mainly used in the chemical plant.
國家已經(jīng)制定了重大危險源辨識標(biāo)準(zhǔn)，辨識依據(jù)是危險物質(zhì)的數(shù)量，主要適用於化工行業(yè)。