abnormal engine noise diagnosis equipment
Low noise diesel engine
naturally-aspirated engine （NA engine）
programmable electronic engine control equipped engine
Eliminating noise method of measuring of simulated noise
MASH(Multi-Stage Noise shaping)noise shaping
noise factor， noise figure
noise meter noise audiometer
noise suppressor noise silencer
Noise-to-noise procedure
signal-noise ratio (=signal-to-noise ratio =SNR)
thermal noise [= thermo-noise]
12V180ZJC diesel engine