The latest style large capacity muffle with special structure has reduced the noise of exhaust gas. A larger air filter is employed to reduce the noise of suction gas.
新型大容量和特殊内部构造消音器降低了排气噪音。采用较大的空气滤器减少了进气噪音。
2
The present invention deals with a double-cone device that produces enhanced suction, pressure amplification and reduced noise.
本发明涉及一种双圆锥设备，其产生了增强的抽吸、压力放大和降低的噪音。
3
Abnormal noise in the pump. Pump could not suction water.