| 单词 | ion engine |
| 释义 | ion enginenouna type of rocket engine in which thrust is obtained by the electrostatic acceleration of charged positive ionsCompare plasma engine Words nearby ion engineIo moth, ion, Iona, IONARC, ion channel, ion engine, Ionesco, ion exchange, ion exchanger, ion-exchange resin, ion generator 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 ion engineion engine A rocket engine that develops thrust by expelling ions fired by an electron gun, used in some spacecraft. Though ion engines create less thrust than chemical combustion engines, they are considerably more efficient and require very little propellant, resulting in much lighter weight and less need for high thrust. See also solar-electric propulsion. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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