对精密测试中常用的几种移相方法进行了讨论，主要浅析小角度电路移相方法。

In this paper, several phase shift methods generally used in accurate test and measurement are discussed. The minor angle circuit is superfacially analyzed mainly.

youdao

首先，针对某型精密伺服转台系统中三块电路板（模拟控制板、单片机板和测角控制板）设计了专门的电路板测试仪。

First, a special instrument to test the analog-control board, single-chip board and angle-measure board in the high precision servo turntable system is designed.

youdao

采用模拟回波和精密延时电路检测照射能力、用CCD采集激光光斑测试激光束散角，实现了整机性能的数字化检测。

Using simulation echo wave and accurate time delay circuit to measure ranging ability, using CCD to grasp laser facular to measure divergence of laser pulse, the digitized methods are realized.

youdao