Double circuit, air brake, drum type.

双电路，空气制动，滚筒式。

youdao

Double circuit power supply and emergency generator for the building.

大厦采用双回路供电，配有应急发电机。

youdao

Double circuit power supply and emergency generator for the building.

大厦采用双回路供电，配有应急发电机。

youdao