datum hole

Several kinds of hydrogeological tests in bore hole and the methods for datum analysis are introduced.

本文介绍了在孔内基岩中进行的几种水文地质试验方法及其数据分析方法.

Application of Technique Datum Hole in Designing Special Clamp

工艺基准孔在专用夹具设计中的应用

The article presents the application of technique datum hole in designing special clamps for drilling diagonal bore and finishing inclined plane, and raises calculation analysis.

论述加工斜面、斜孔零件时工艺基准孔在夹具设计时的应用，并提出了计算分析。

For location measurement of holes on spheroid part based on VC++ and Matlab, at first, the image of datum hole was gathered, and the origin coordinate of hole was confirmed after processed the image.

基于VC++与Matlab混合编程的球面孔位置测量，先采集基准孔图像，经图像处理确定原点坐标。