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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| DB/T 90—2022 |
Verification Regulations for Invar Leveling Staff {译} 因瓦水准标尺检定规程 |
China Provincial
Standards Invar |
 English PDF |
| JJG 306-2004 |
Verification Regulation of 24m Invar Wire 24m因瓦基线尺检定规程 |
China Metrological
Standards Invar |
English PDF |
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