harefoot trefoil (trifolium arvense) 兔足三叶草 harmful substance 有毒物质 harvestedherbage 收获的牧草[在某一简单的收获或者系列的收获中,单位草地平面或者物体表面的大上被机械收割的牧草量] ..
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toxic and harmful substance 有毒 ; 有害物质 ; 有毒有害物质
potentially harmful substance 可能有害物质 ; 潜在有害物质
harmful substance and reagent 危险物质或制剂
chemical harmful substance monitoring [环境] 化学有害物监测
concentration of harmful substance 有害物质浓度
limit of harmful substance 有害物限量
Exposure to a harmful substance 危险物接触
harmful substance report 有害物质报告
Poisonous and harmful substance 有毒和有害物质 ; 有毒有害物质
The harmful substance in Chinese medicinal material mainly includes pesticide, heavy metal, microorganism, etc.
中药中有害物质主要指农药、有害重金属、微生物等。
参考来源 - 中药中有害物质污染状况与检测研究The method to examine the harmful substance had good reproduction quality and high returns-ratio characteristic, then it was simple, fast, accurate, thus reduced the labor intensity, raises the working efficiency.
8.采用的有害物质测定方法均有具有重现性好和回收率高的特点且简便、快速、准确,从而减少了劳动强度,提高工作效率。
参考来源 - 天水洋蓟罐藏工艺、营养品质及有害物质残留测定的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Filter tips clean some harmful substance from the smoke.
滤嘴能消除香烟中一些有害的物质。
In the manufacturing process of industry, the exhaust gas contain some harmful substance such as soot, sulfide, nitration, oil, and so on.
工业生产排出的废气中含有大量的烟尘、硫化物、硝化物、油类等有害物质。
These instructions, defense artificially added chemicals in food, some harmful substance is but with the naked eye or simple method of inspection.
这些说明，防御食品中人为的添加化学物质、有害物质有些是可是用肉眼或简单的方法检验出来的。
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