| 单词 | ground wave |
| 释义 | > as lemmasground wave ground wave n. the radio wave that passes from a transmitter to a receiver other than by reflection from the ionosphere, comprising one or more of the direct wave, the ground-reflected wave, and the surface-wave; also attributive. ΘΚΠ society > communication > telecommunication > radio communications > [noun] > radio wave > types of space wave1899 surface wave1913 CW1920 beam1924 sky wave1924 ground wave1927 tweek1933 the world > matter > physics > electromagnetic radiation > electronics > electronic phenomena > [noun] > waveform > types of waveform > radio waves carrier1911 ground wave1927 1927 E. V. Appleton in Wireless World 5 Jan. 3/2 There is a very real difference between a ground wave and an atmospheric wave if we consider the magnetic force in the wave as well as the electric wave. For a horizontally travelling ground wave, such as that which travels direct from transmitter to receiver, [etc.]. 1941 K. Henney Radio Engin. Handbk. (ed. 3) xv. 514 The signal..may have been propagated either by the ground wave, which travels along the earth's surface, or by the sky wave. 1943 F. E. Terman Radio Engineers' Handbk. x. 675 The surface wave..represents the whole of the ground wave when both transmitting and receiving antennas are located at the surface of the earth. 1965 BBC Handbk. 115 The signals which carry domestic broadcasting programmes are usually designed to be received by ground-wave on medium and long waves. 1965 BBC Handbk. 115 Ground-wave propagation of short waves is not feasible over long distances. < as lemmas |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。