| 单词 | secondary emission |
| 释义 | secondary emissionnounthe emission of electrons (secondary electrons ) from a material that is bombarded with electrons or ions. Origin of secondary emissionFirst recorded in 1930–35 Words nearby secondary emissionsecondary digestion, secondary disease, secondary drive, secondary dysmenorrhea, secondary electron, secondary emission, secondary encephalitis, secondary follicle, secondary gain, secondary glaucoma, secondary gout Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for secondary emissionsecondary emission nounphysics the emission of electrons (secondary electrons) from a solid as a result of bombardment with a beam of electrons, ions, or metastable atoms: used in electron multipliers 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 Scientific definitions for secondary emissionsecondary emission The emission of electrons or ions from a material, caused by collisions of electrons or other charged particles with the material. Electron multipliers, photomultipliers, and Geiger counters all work by means of secondary emission. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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