Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
GB/T 4854.4-1999 | English | 120 |
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Acoustics. Reference zero for the calibration of audiometric equipment. Part 4: Reference levels for narrow-band masking noise
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GB/T 4854.4-1999
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GB/T 4854.4-1999
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