There is some blindness for medium and small enterprises to purchase numeric control machine tool, which makes some loss.
中小型企业在选购数控机床时，存在着一定的盲目性，造成了一些损失。
It gives that the wave shape equations of conjugate enclosed grooves and the formation method on the numeric control machine tool.
给出了中心盘、行星盘上共轭封闭槽合形方程序。
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