magnetic polarity reversal

基本解釋

The magnetic polarity reversal record is often illustrated by means of a column with black and white intervals depicting the two polarity.
地磁極性反轉(zhuǎn)記錄通常用代表兩種極性的黑白間隔所組成的極性柱來表示。
The magnetic polarity reversal polarity reversal record is often illustrated by means of a column with black and white intervals depicting the two polarity.
地磁板性反轉(zhuǎn)紀錄通常用代表兩種極性的黑白間隔所組成的極性柱來表示。
geology.nju.edu.cn
They claim a relationship between the rotation and the magnetic polarity of Earth, which does change irregularly, with a magnetic reversal taking place every 400,000 years on average.
他們聲稱地球磁極和自轉(zhuǎn)有關(guān)系。地球的磁極的確會不槼律的改變，大約平均400，000年發(fā)生一次磁極轉(zhuǎn)換。