叠层材料是一种先进的复合材料，阶跃式变参数振动钻削新工艺最适合于加工新型叠层材料。
The laminated material is an advanced compound material. A new vibratile drilling technology with step type variable parameter is suitable IC process the new laminated material.
实验得出，阶跃式变参数振动钻削效果明显优于相应条件下的普通钻削。
It is indicated by test that the effect of step type variable parameter vibratile drilling is more superior than that of common drilling at corresponding conditions.
针对叠层复合材料的微小孔加工 ，提出了阶跃式多元变参数振动钻削新方法 。
This lays down a theoretical foundation for quick selection of right axial vibration drilling parameters and successful automatic machining of deep holes.
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