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[滚齿] 工人一次加工3个,齿数不一样。你相信吗 |
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发表于 2009-4-25 14:11
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确实是因为没夹紧!我有实践经验。实践实践与真理的唯一标准!
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发表于 2009-4-25 22:08
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发表于 2009-4-25 22:13
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发表于 2009-4-26 22:23
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