起重机械事故在冶金企业工伤事故中占很大的比例。

Accidents of crane machines account for a large percentage in the accidents of metallurgical industry.

youdao

起重机械事故在冶金企业工伤事故中占很大的比例。

Accidents of crane machines account for a large percentage in the accidents of metallurgical industry.

youdao