切削性能试验表明，激光硬化的刀具寿命可以大大提高。

Test of cutting performance shows that its lifetime can be increased greatly.

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在干切状态下，切削深度对刀具寿命影响最大。

Under dry cutting state, tool life is affected mostly by cutting depth.

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在干切状态下，切削深度对刀具寿命影响最大。

Under dry cutting state, tool life is affected mostly by cutting depth.

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