In addition, the flat metal coating will not be scratched with the probe, so that the conducting plate has long service life and good experiment effect.
另外，金属镀膜平整度好，且不会被探针划伤，因此，导电板的使用寿命长，实验效果好。
2
To get rid of the sharp Angle and the grinding tracks on the probe, the tip will be polished by roll-typed grinding wheels to become sharp, round, flat or ball pointed.