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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 6091-2022 |
knife edge ruler {译} 刀口形直尺 |
China National Standards ruler |
 English PDF |
| GB 17740-2017 |
General ruler for earthquake magnitude 地震震级的规定 |
China National Standards ruler |
English PDF |
| GB/T 9056-2004 |
Metal ruler 金属直尺 |
China National Standards ruler |
English PDF |
| GB 17740-1999 |
General ruler for earthquake magnitude 地震震级的规定 |
China National Standards ruler |
English PDF |
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