| 单词 | eta-c particle |
| 释义 | eta-c particle[ ā′tə-sē′, ē′tə- ] An electrically neutral meson having a mass 5,832 times that of the electron and a mean lifetime of approximately 3.1 X 10-22 seconds. See Table at subatomic particle. Words nearby eta-c particleE. Sussex, et, eta, Eta Carinae, eta-c meson, eta-c particle, etaerio, étagère, e-tail, e-tailing, et al. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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