long wave
US /ˈlɔŋ weɪv/
UK /ˈlɔŋ weɪv/
1.
長波
a radio wave of a wavelength greater than 1,000 meters (frequency less than 300 kHz), used for long-distance communication.
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Ships at sea often rely on long wave radio for navigation and communication.
海上船隻常依賴長波無線電進行導航和通信。
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The old radio could pick up stations on the long wave band.
那台舊收音機可以接收長波波段的電台。