Methods: Seek interrelation between dust dose and morbidity level with the method of life table.

方法：应用寿命表法求得接尘剂量与发病水平的关系。

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Methods: Seek interrelation between dust dose and morbidity level with the method of life table.

方法：应用寿命表法求得接尘剂量与发病水平的关系。

youdao