Long wave
01
长波, 长波
a radio wave with a frequency under 300 kHz and a wavelength of more than 1 kilometer that is used for broadcasting
例子
The radio station broadcasts on a long wave frequency, allowing it to be heard over vast distances.
广播电台以长波频率广播，使其能够在很远的距离被听到。
Ships use long wave communication to stay in touch with coastal stations.
船舶使用长波通信与海岸站保持联系。
