| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| JJG(YD)014-1992 | English | 489 |
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Days<=3
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Specification for verification of telegraph signal testing instruments
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JJG(YD)014-1992
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JJG(YD)014-1992
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