既能大大减少切削时间，又能提高加工精度。

It can decrease the cutting time greatly, and also improve the precision of machining.

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在运转情况下，那意味着将切削时间最大化。

In the case of turning, that means maximizing cutting time.

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结果表明，攻丝扭矩随净切削时间比的增加而增大，且对攻丝扭矩的影响最显著。

The analysis indicates that tapping torque increases as net cutting time ratio increases, where net cutting time ratio influences the tapping torque more significantly.

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