| 单词 | appleton layer |
| 释义 | Appleton layernoun Geophysics.See under F layer. Origin of Appleton layerFirst recorded in 1930–35; named after Sir E. V. Appleton Words nearby Appleton layerAppleseed, Johnny, Apples of the Hesperides, apple sucker, applet, Appleton, Appleton layer, apple tree borer, Apple Valley, appley, appliance, appliance garage Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for Appleton layerAppleton layer nounthe F region of the ionosphere Word Origin for Appleton layerC20: named after Sir Edward Appleton 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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