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.
采用四面刃的剪切刀片，提高了刀具的使用寿命。
The adoption of four-sideedge shearing blade prolongs the service life of blade.
现场使用表明，刀具使用寿命成倍提高。
The field use shows that the service life of the cutter is increased.
现场使用表明，刀具使用寿命成倍提高。
The field use shows that the service life of the cutter is increased.
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