| 单词 | cosmic rays |
| 释义 | cosmic rayspl nradiation consisting of particles, esp protons, of very high energy that reach the earth from outer spaceAlso called: cosmic radiation Words nearby cosmic rayscosmic background radiation, cosmic dust, cosmic microwave background, cosmic noise, cosmic ray, cosmic rays, cosmic string, cosmic web, cosmid, cosmine, cosmism 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 Cultural definitions for cosmic rayscosmic rays Elementary particles, mainly protons, that are produced by the sun and other stars and then strike the upper atmosphere of the Earth. Some of these particles are absorbed, some help form the Van Allen belt, and some reach the Earth's surface, where they form a part of the background radiation that constantly surrounds us. The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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