对于非平衡式信号线来说，就是一根被屏蔽了的信号线，这个中心信号线传输信号，且相对于地电势。

An unbalanced line is generally a single-conductor shielded cable with the center conductor carrying the signal and the shield at ground potential.

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如果在两个接地点存在一个小的电势差，在系统的敏感部分就会有接地电流通过。

If a small potential difference exists between two ground points, some ground currents may flow through a sensitive part of the system.

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通过建立合理的地电模型，解决了非均匀介质条件下的电势分布问题，进而提高了系统的检测精度。

Through setting up reasonable earth-electricity model, the distribution problem of electrical potential in uneven medium is resolved and system detection accuracy is improved.

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