| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| JJG 991-2017 | English | 579 |
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Days<=5
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Audiometric Equipment--Instruments for the Measurement of Aural Acoustic Impedance/Admittance
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JJG 991-2017
| Valid |
JJG 991-2017
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