单词 | effective earth radius |
释义 | effective earth radius [ǝ¦fek·tiv `ǝrth ´rād·ē·ǝs] COMMUNICATIONS A radius value used in place of the geometric radius to correct for atmospheric refraction in estimating ranges of antennas when the index of refraction in the atmosphere changes linearly with height; under conditions of standard refraction it is 4/3 the geometric radius. Also known as effective radius of the earth. |
随便看 |
|
科学参考收录了103327条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。