| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| JJG 448-1993 | English | 199 |
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Days<=2
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Verification Regulation of Ultrasonic Power Meters for Watt Level
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JJG 448-1993
| Obsolete |
JJG 448-1993
|