GB/T 4854.3-2022声学校准测听设备的基准零级第3部分:骨振器纯音基准等效阈振动力级标准
英文:Acoustics—Reference zero for the calibration of audiometric equipment—Part 3:Reference equivalent threshold vibratory...
英文:Acoustics—Reference zero for the calibration of audiometric equipment—Part 3:Reference equivalent threshold vibratory...