Even though the abrasion occurs by using the blade, since the saw like or wavy edge part is semipermanently maintained, the cutting ability is not reduced.
即使因使用刀具而产生磨损，但由于锯状或波纹状的边缘部被半永久性地维持，所以切削性能不会降低。
Even though the abrasion occurs by using the blade, since the saw like or wavy edge part is semipermanently maintained, the cutting ability is not reduced.
即使因使用刀具而产生磨损，但由于锯状或波纹状的边缘部被半永久性地维持，所以切削性能不会降低。
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