| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| SJ/Z 9149-1987 | English | 159 |
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Days<=3
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Values for the difference between free-field and pressure sensitivity levels for one-inch standard condenser microphones
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SJ/Z 9149-1987
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SJ/Z 9149-1987
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