| 单词 | etalon |
| 释义 | etalon[ eyt-l-on ] / ˈeɪt lˌɒn / noun Optics.an interferometer consisting of two glass plates that reflect approximately half of each ray of light incident upon them and that are separated by a small, fixed distance: used to compare wavelengths and to study atomic spectra. Origin of etalon1900–05; <French; Middle French estalon standard, derivative of Old French estal place <Germanic; see stall1 Words nearby etalonetaerio, étagère, e-tail, e-tailing, et al., etalon, eta meson, etamine, etanercept, etaoin shrdlu, eta particle Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for etalonetalon / (ˈɛtəˌlɒn) / nounphysics a device used in spectroscopy to measure wavelengths by interference effects produced by multiple reflections between parallel half-silvered glass or quartz plates Word Origin for etalonC20: French étalon a fixed standard of weights and measures, from Old French estalon; see also stallion 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 |
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