heavy chemicals

The farmers shouldn't use so heavy chemicals in their products.

农民们在庄稼上不应使用大量的化学药品。

In this dangerous job, workers are put in long hours surrounded by heavy machinery and toxic chemicals.

从事这个行业的工人长时间被重型机器和有毒化学品包围。

Research on constructing Shanxi base of energy and heavy chemicals

山西能源重化工基地建设研究

Residues of these chemicals are often carried to water courses during periods of heavy rainfall.

这些化学药品的残留部分在暴雨期间常被带到渠道中.

In some areas, serious pollution are found by heavy metals and chemicals because of poor manual dismantling and recovery technology in family workshops. As results, e-waste has caused serious harm to the enviroment and human health.

家庭小作坊式的手工拆解和落后的回收技术造成了严重的地区性重金属和化学物质污染，对我国的环境及居民身体健康造成严重的危害。

Development of new production routes for petro-chemicals from heavy oil; Automobile Chemicals

发展重油为原料的石油化工新路线；汽车配套用主要化工产品

Particles of carbon produced when fossil fuels are burned can lead to similar problems but they are also coated with toxic heavy metals, chemicals and volatile organic compounds.

燃烧化石燃料时产生的碳微粒可能导致类似问题，但它们外表还包裹着有毒的重金属、化学物质和挥发性有机物。

Like average amphibians, with its naked skin of no protection by leather and fur, the tree frog is very sensitive to environment pollution by heavy metal, chemicals and acid rain.

树蛙和一般两栖类一样，皮肤裸出，没有毛皮的保护，所以对生活环境中重金属、农药与酸雨等污染十分敏感。