| 释义 |
magnetic reversal
magnetic reversaln.1. A change in the polarity of a magnetic field in which magnetic north and south are reversed.2. See geomagnetic reversal.magnetic reversal
magnetic reversal[mag′ned·ik ri′vər·səl] (geophysics) A reversal of the polarity of the earth's magnetic field that has occurred at about one-million-year intervals. |