The author analyses the difference between simple NC machine and conventional NC machine and fine that difference may exist in the application scope.
简易数控机床能否作专机使用于大批量生产?该文分析了简易数控机床与普通数控机床存在的较大差异，因此在适用范围上可有所区别。
The use of CAD/CAM systems and NC machine tools for die and mould manufacturing offers considerable advantages over conventional methods.
针对CAD/CAM系统不能自动生成加工参数的问题，国内外许多学者提出了利用加工过程模拟技术优化加工程序的思想。
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