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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 34837-2017 |
Classification, terminology and numbering for parts and assemblies of the time measuring instruments—Quartz wrist watch movements 计时仪器零部件分类、名称和编号 石英手表机心 |
China National Standards instruments—Quartz |
 English PDF |
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