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.
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.
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。
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