The subway can influence the observation of geomagnetism, geoelectric field and ground resistivity around it, but the influencing mechanism is not same.
地铁对周围地磁、地电场、地电阻率的观测都会产生影响，但影响的机理不尽相同。
It is pointed out that the instrument has been able to respond well to the variation of geoelectric field intensity of observation area since its running.
指出，地电场仪自运行以来，该仪器能较好地反映测区地电场强度的变化。
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