目的探讨游离二氧化硅累积接触与尘肺累积发病的剂量反应关系。
Objective to study dose response relationship between cumulative exposure to silica and cumulative incidence of pneumoconiosis.
用累积剂量法建立3组患者的剂量反应曲线。
The cumulative dose-response curves of the 3 groups were established.
用累积剂量法建立3组患者的剂量反应曲线。
The cumulative dose-response curves of the 3 groups were established.
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