资料重复

leftwall

看介绍内容应该是一样的，格式也一样，只是大小不同
4 S& \9 X" u. a/ l  D材料加工工艺过程的检测与控制
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http://www.3dportal.cn/discuz/viewthread.php?tid=488729&highlight=%B2%C4%C1%CF%BC%D3%B9%A4%B9%A4%D2%D5%B9%FD%B3%CC%B5%C4%BC%EC%B2%E2%D3%EB%BF%D8%D6%C6