得出普通钻磨时的轴向平均切削力和平均扭矩均远大于超声钻磨加工时的轴向平均切削力和平均扭矩；
The research results show that the average axial cutting force and torque of common drill-grinding are greater than that of ultrasonic drill-grinding.
得出普通钻磨时的轴向平均切削力和平均扭矩均远大于超声钻磨加工时的轴向平均切削力和平均扭矩；
The research results show that the average axial cutting force and torque of common drill-grinding are greater than that of ultrasonic drill-grinding.
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