工业软件科普系列之设计软件CAD:鉴于研发设计类基本被国外垄断,而且是核心技术差距最大的领域,所以今天第一期,就先说说研发设计里的CAD和CAM好了,美法德凭什么能垄断设计软件?为什么均来自高端制造业巨头?
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