该指令规定了爆炸的特点，防爆装置和保护系统的要求。

This directive regulates the requirements for the characteristics of explosion-proof equipment and protection systems.

youdao

该指令规定了爆炸的特点，防爆装置和保护系统的要求。

This directive regulates the requirements for the characteristics of explosion-proof equipment and protection systems.

youdao