应用压电陶瓷振动台振动钻削装置，采用变进给量振动钻削法加工微小孔，并用工具显微镜对入钻定位误差和出口毛刺进行测量。

By applying apparatus for piezoelectric ceramic vibration drilling, the method of varying feed rates in vibration drilling is used to drill the micro-hole.

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对厚度伸缩压电陶瓷振子的振动状态进行了分析，并得到其等效电路。

The vibration behaviour of piezoelectric ceramic resonators with thickness expansion mode is analyzed and its equivalent circuit is obtained.

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结果表明，当压电梁振动阶数较高时，陶瓷片的横向布置对梁的振动特性影响很小。

The results show that the effects of orientation of piezoelectric ceramic on high order vibration characteristics of beam are low.

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