| 淘帖主题 | 作者 | 回复/查看 | 最后发表 |
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GB/T 14231-1993 齿轮装置效率测定方法
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admin 2020-3-13 22:27 | 0 2732 | admin 2020-3-13 22:27 |
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GB/T 38192-2019 注射成型塑料圆柱齿轮精度制 轮齿同侧齿面偏差和径向综合偏差的定...
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admin 2020-3-13 22:23 | 4 2246 | fzh1987 2023-11-11 17:19 |
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