Standard Code | Standard Title | Standard Class | Order |
---|---|---|---|
JJG(QB)83-1991 |
(BMP-2 type instrument precision quartz clock calibrator test procedures) |
China Metrological
Standards Clock instrument |
English PDF |
JJG(QB)79-1991 |
(Clock instrument calibrator test procedures) |
China Metrological
Standards Clock instrument |
English PDF |
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