flapper valve
短语词组
- flapper -valve 板閥
- flapper seal valve 密封瓣閥
- flapper actuator valve 瓣閥
- Nozzle Flapper Servo Valve 噴嘴擋板伺服閥
- Nozzle flapper valve 噴嘴兒擋板閥
- bulkhead flapper valve 艙壁瓣閥
- flapper type exhaust valve 舌門型排氣閥
- jet flapper valve 單噴嘴擋板閥 返回 flapper valve