介绍了非煤矿山安全评价方法的种类，阐述了作业条件危险性评价法(LEC)。

The paper presents the types of non-coal mine safety assessment and expounds the job risk analysis method (LEC).

youdao

介绍了非煤矿山安全评价方法的种类，阐述了作业条件危险性评价法(LEC)。

The paper presents the types of non-coal mine safety assessment and expounds the job risk analysis method (LEC).

youdao