石化过程工业涉及复杂的系统流程，具有变量多，危险点多的特征。

Petrol-chemical industry has complicated process, many parameters and dangerous points.

youdao

石化过程工业涉及复杂的系统流程，具有变量多，危险点多的特征。

Petrol-chemical industry has complicated process, many parameters and dangerous points.

youdao