| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| JJG 439-1986 | English | 279 |
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Days<=3
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Verification regulation of intermediate frequency precision waveguide below cut-off attenuator
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JJG 439-1986
| Obsolete |
JJG 439-1986
|