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1·The leakage current must be returned to the source, it will flow through any available thermocouple conductor, line pipe, pipeline, water or earth went to the source.

漏泄电流必需前往至源极，它将流经任何热电偶可用的导体、线管、管道、水或大地前往到源极。

2·Earthing can be divided into two forms: connecting earth and connecting conductor substituted for earth.

接地可分为与大地连接、与替代大地的导体连接两种方式。

3·The ionosphere, an electromagnetic-wave conductor, 100 KMS above the earth, consists of a layer of electrically charged particles acting as a shield from solar winds.

电离层(一种电磁波导体，位于地球上方100公里处)由一层荷电粒子组成，作为一个抵当太阳风的樊篱。

4·And to make electric conductor or conductor and the distance between the earth have enough insulation, used for type switch gear and other switchgear inside.

并使带电导体间或导体与大地之间有足够的距离绝缘，用于中置式开关柜及其它开关柜内。