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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| JJG 661-2004 |
Verification Regulation of Flatness Interferometer with Isoclinic Circle Fringe 平面等倾干涉仪检定规程 |
China Metrological
Standards Verification Regulation Flatness |
 English PDF |
| JJG 765-1992 |
Verification Regulation of Flatness Standard 平面标准器 |
China Metrological
Standards Verification Regulation Flatness |
English PDF |
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