GBT 7182-1987 铁路内燃机车动力室噪声测量

SS4422GGBBUDCGBMeasurementofnoiseinengineroomofdiesellocomotivesMeasurementofnoiseinengineroomofdiesellocomotivesGB331582GB378583GB3241821/11/3A1/11/35sLp5dB5dBdBAIdBAN10dB10dB1UDCGB]101lg[1011.0∑==NiLPPiNLPLPiL1GB1dB(A)106~94~5330-1-2-3805km/h605km/h2/31.5ma.b.c.d.e.f.g.2GB3