短語詞組短語geomagnetic activity effect 地磁傚應(yīng)geomagnetic activity index 地磁指數(shù);[地物]地磁活動(dòng)指數(shù)solar activity and geomagnetic activity 太陽活動(dòng)和地磁活動(dòng) 返回 geomagnetic activity