GB/T 16539-1996    Acoustics-Determination of sound power levels of noise sources using vibration velocity-Measurement for seal machinery

声学 振速法测定噪声源声功率级 用于封闭机器的测量

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DL/T 5057-1996   GB 4452-1996   JB/T 8073-1996   HB 7504.6-1997   HB 7504.10-1997   HB 7504.5-1997   HB 7504.1-1997   HB 7504.9-1997   HB 7504.14-1997   HB 7504.11-1997   HB 7504.3-1997   HB 7504.15-1997   HB 7504.2-1997   HB 7504.8-1997   HB 7504.7-1997   HB 7504.4-1997   HB 7504.12-1997   HB 7504.16-1997   HB 7504.13-1997   GB/T 6592-1996