1)thin conductive formation,正常场2)normal electric field,正常电场3)normal magnetic field,正常磁场4)height correction,正常场校正5)normal gravity field,正常重力场6)Normal geomagnetic field,地磁正常场
用法例句
In order to obtain anomaly of object body, we must make the diurnal correction 、 the normal field-correction (including the longitude and latitude correction) and the height correction.