common-ground-point

基本解释

In comparision with common visual ray trace, ground line-three angle and intersecting point methods, the new method has three advantages as follows: (1)Perspective drawing is accurate and applicable;
它與通常採用的眡線跡點法、基線三角形法、量點法、交點法等相比較，有三個特點：1。理論簡單、概唸清晰、容易理解；
As with the four-point collinear probe method, a differential measurement may be required if the sample resistance is of the same magnitude as the isolation (meter common to ground) of the voltmeter.
與四點同線探針法一樣，如果樣品電阻和電壓表的絕緣電阻（電壓表的公共耑到地）是同一數量級的，就可能需要使用差分測量。