It is necessary to set up an automated propellant leak detection system.

建立一个能实现推进剂泄漏故障自动检测的系统是很必要的。

youdao

It is necessary to set up an automated propellant leak detection system.

建立一个能实现推进剂泄漏故障自动检测的系统是很必要的。

youdao