radiotelegraphy
柯林斯詞典
1. N a type of telegraphy in which messages (usually in Morse code) are transmitted by radio waves; its use is no longer widespread as it has been superseded by satellite technology 無(wú)線電報(bào)術(shù)(現(xiàn)已被衛(wèi)星技術(shù)所取代) (Also called wireless telegraphy)
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