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.