动触杆排气孔
the hole of moving contacts
沼气排气钻孔
methane drainage borehole
堵塞的空气滤清器排放孔
plugged air cleaner drain hole
排气系统空气通气孔
exhaust system air breather
制水孔式排气井
exhaust shaft with throttle-orifice
大气排气
atmospheric exhaust
atmospheric steam exhaust
电子设备冷却气排气口
electronic equipment cooling air exhaust port
废气排气系统
exhaust emission suction system
排气排放量
amount of exhaust emission