| 单词 | magnetic epoch |
| 释义 | magnetic epochnoungeology a geologically long period of time during which the magnetic field of the earth retains the same polarity. The magnetic field may reverse during such a period for a geologically short period of time (a magnetic event) Words nearby magnetic epochmagnetic dipole, magnetic dipole moment, magnetic disk, magnetic domain, magnetic drum, magnetic epoch, magnetic equator, magnetic field, magnetic field of the Earth, magnetic field reversals, magnetic field strength Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 |
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