| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| JJF 1147-2006 | English | 579 |
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Days<=4
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Calibration specfication for acoustic performance of anechoic rooms and hemi-anechoic rooms
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JJF 1147-2006
| Valid |
JJF 1147-2006
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