安装壁挂式主控单元控制箱，并敷设交直流电源电缆二条。

Mount main control unit and laying cable (2 core cable, two PCS) for unit AC and DC power supply.

youdao

安装壁挂式主控单元控制箱，并敷设交直流电源电缆二条。

Mount main control unit and laying cable (2 core cable, two PCS) for unit AC and DC power supply.

youdao