safety status classification

• 安全等级划分

safety status classification的用法和样例：

例句

1. The safety status classification method has been established by the safety technology criteria and safety assessment method has been given based on Mond evaluation method also.
   根据有关规范建立了燃气管网的安全等级划分方法，并采用蒙德评价法建立了燃气管网单元的危险性评价方法。