目的建立隧道工矽肺危险度评价模型，预测矽肺发病规律。

Objective to develop a risk assessment model for silicosis in tunnellers and to predict the incidence pattern.

youdao

目的建立隧道工矽肺危险度评价模型，预测矽肺发病规律。

Objective to develop a risk assessment model for silicosis in tunnellers and to predict the incidence pattern.

youdao