Force of double vertical loop is more gentle than vertical loop's.

双垂直曲的作用力比垂直曲的柔和的多。

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Computer use of vertical feed system for open-loop control.

利用微机对纵进给系统进行开环控制。

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Computer use of vertical feed system for open-loop control.

利用微机对纵进给系统进行开环控制。

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