And insulating ring technology is adopted to further improve input impedance influenced by insulatingresistance of printed circuit board.
印刷电路板上加绝缘环，消除了线路板绝缘电阻对放大电路输入阻抗的影响。
2
The insulatingresistance on the coating surface of buried pipelines is a very important parameter which is directly concerned with the cathode protection effect.
地下管道涂层表面绝缘电阻是直接关系到阴极保护效果的一项重要参数。
3
After comparing and analyzing several conventional insulatingresistance measuring method such as AC method, DC creepage method and so on, their shortcomings in use are pointed out.