The results showed that the long-term variation of the geomagnetic field in Chian in a composite activity including different cycles of variation big and small.是什么意思_The results showed that the long-term variation of the geomagnetic field in Chian in a composite activity including different cycles of variation big and small.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句