| 单词 | permanent magnet |
| 释义 | permanent magnetnouna magnet that retains its magnetism after being removed from an external magnetic field. Origin of permanent magnetFirst recorded in 1820–30 OTHER WORDS FROM permanent magnetpermanent magnetism, nounWords nearby permanent magnetPermanent Court of Arbitration, permanent dentition, permanent echo, permanent hardness, permanent health insurance, permanent magnet, permanent mold, permanent press, permanent resident, permanent set, permanent tooth Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for permanent magnetpermanent magnet nouna magnet, often of steel, that retains its magnetization after the magnetic field producing it has been removed Derived forms of permanent magnetpermanent magnetism, nounCollins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for permanent magnetpermanent magnet [ pûr′mə-nənt ] A piece of ferromagnetic material that retains its magnetism after it has been magnetized. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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