论文部分内容阅读
当前,一些企业经济效益不太理想,因此,一谈到CAD,有的人就讲:现在是找“米”下锅,不是吃“补药”的时
At present, some companies are not very economically viable. Therefore, when it comes to CAD, some people say: Now is the time to find the “rice” pot, not to eat “tonics.”