Ojbective To probe the relationship between the serum lead of the copper smeltery workers and the occupational exposure.
目的探讨铜冶炼工人血铅与职业性暴露关系。
Methods a prevalence survey was carried out to investigate 222 male workers of a copper smeltery plant and 68 workers in a control group.
方法采用现况调查方法，对铜冶炼厂222名男性工人和68名对照组工人进行调查。
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