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单词 e layer
释义

WordReference Random House Unabridged Dictionary of American English © 2024
E layer, 
  1. Physicsthe radio-reflective ionospheric layer of maximum electron density, normally found at an altitude between 60 and 75 mi. (100 and 120 km). Also called Heaviside layer, Kennelly-Heaviside layer. 
  • 1930–35

WordReference Random House Unabridged Dictionary of American English © 2024
E region, 
  1. Meteorology, Physicsthe region of the ionosphere in which the E layer forms.
  • 1935–40

Collins Concise English Dictionary © HarperCollins Publishers::
E layer n
  1. another name for E region
Collins Concise English Dictionary © HarperCollins Publishers::
E region, E layer n
  1. a region of the ionosphere, extending from a height of 90 to about 150 kilometres. It reflects radio waves of medium wavelength
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更新时间：2024/11/10 18:51:27