同义词
1)magnetic polarity,磁极性2)magneticpolarity,磁极性3)variable pole,变磁极性4)Magnetic fabrics,地磁极性5)diamagnetic polarity,抗磁极性，反磁极性6)CR0 reversal event,CR0反磁极性事件7)chronological table,地磁极性年表8)Geomagnetic polarity transihon,地磁极性转换9)geomagnetic polarity reversal,地磁极性反转10)magnetostratigraphy,地磁极性地层
