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原帖由 mubaibyby 于 2008-6-25 19:40 发表 http://www.3dportal.cn/discuz/images/common/back.gif " g8 g; n" l" H发动机厂家的汽缸盖好多用数控加工了,机体的加工较多采用刚柔结合
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