breather vent meaning in English

通气管
通气口

Tanks for transport of dangerous goods - service equipment for tanks - pressure and vacuum breather vent
危险物品运输罐.罐的辅助设备.压力和真空通气口
Tanks for transport of dangerous goods - service equipment for tanks - pressure and vacuum breather vent
危险物品运输用槽罐车.槽罐车用辅助设备.压力和真空通气口
Tanks for transport of dangerous goods - service equipment for tanks - pressure and vacuum breather vent ; german version en 14595 : 2005
危险物品运输罐.罐的辅助设备.压力和真空通气口