什么是暴利？只计制造成本不计研发成本？拷一个软件光盘成本多少？开发软件成本又是多少？

来源: 26484915 于 2014-08-11 07:23:33 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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