environ. |
chemical contamination The addition or presence of chemicals to, or in, another substance to such a degree as to render it unfit for its intended purpose. Also refers to the result(s) of such an addition or presence (化学物质的添加或参与到另一种物质,使它达到预期的目的。也指这种添加或参加反应的生成物。); chemical pollution Pollution caused by substances of chemical nature, including chlorinated hydrocarbon pesticides, polychlorinated biphenyls, metals as mercury, lead, cadmium, arsenic, etc. (化学物质引起的污染,包括氯代烃杀虫剂、多氯联苯、金属如水银、铅、镉、砷等。) |