But since then, a new source of lead pollution - factories that produce lead-acid batteries for electric bikes, motorcycles and cars - has emerged with a vengeance.
2
本文论述了环境铅污染与健康,包括污染物的来源、毒性危害和分析方法。
The article discusses on the relationship of environmental lead pollution and health, which covers pollutant sources, toxicity hazard and analysis method.
3
讨论了铅污染的主要来源,并进行了儿童铅中毒的预防对策研究。
The main source of lead pollution and the preventive method of child lead poisoning were discussed.