2817| 8
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小模数渐开线圆柱齿轮的误差定义及代号GB2363-90 |
发表于 2009-9-21 11:03
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发表于 2015-3-13 08:21
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点评
gb2363-1990有新版本啦?
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发表于 2019-2-19 10:15
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发表于 2019-2-19 13:42
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发表于 2019-4-12 19:33
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