平行连接？ ？ ？压力降小温度差小不易检查通道断路。

Parallel connection? Small pressure drop Small temperature difference Difficult monitoring of blockage.

youdao

检查系统是否对准-端口连接件必须平行。

Check system alignment - end connector (s) must be parallel.

youdao

检查系统是否对准-端口连接件必须平行。

Check system alignment - end connector (s) must be parallel.

youdao