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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 1357-2008 |
Cylindrical gears for general engineering and for heavy engineering - Modules 通用机械和重型机械用圆柱齿轮 模数 |
China National Standards Modules cylindrical gear |
 English PDF |
| GB/T 1840-1989 |
Modules of cylindrical gear with circular arc profiles 圆弧圆柱齿轮模数 |
China National Standards Modules cylindrical gear |
English PDF |
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