| 释义 |
长波chángbō波长30,000米—3,000米(频率10—100千赫)的无线电波。以地波方式传播,用于超远程无线电通讯和导航等方面。{long wave; radio waves with wavelengths between 30,000 and 3,000 metres (frequency 10-100 kilohertz), transmitted in the form of surface wave and used in super-distance communication and navigation} |