由于加进适量极压添加剂对高转速，大进刀具时，刀具仍然耐磨，制品表面光滑。
Due to the amount of extreme pressure additives on high speed, into the cutter, cutter still wear, smooth surface products.
由于加进适量极压添加剂对高转速，大进刀具时，刀具仍然耐磨，制品表面光滑。
Due to the amount of extreme pressure additives on high speed, into the cutter, cutter still wear, smooth surface products.
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