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在相移干涉测试技术中通常都采用压电陶瓷元件作为相移元件；本文介绍了两种压电陶瓷元件驱动电路的工作原理并对两种方案进行了比较．
Piezoelectric ceramic elements are usually used as phase-shift elements in the phase-shift interference test technique. This paper introduces the working principle of two kinds of piezoelectric ceramic element driving circuits and compares the two schemes.