英语词汇“θ197974”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	θ197974
释义	society > communication > telecommunication > telegraphy or telephony > telegraphy > [noun] > types or systems of > radio-telegraphy (10) space telegraphy1897 = radio-telegraphy, n. wireless telegraphy1897 Telegraphy in which the signal is transmitted by radio waves rather than over wires; = radio-telegraphy, n. radio-telegraphy1898 Telegraphy by means of radio (rather than wires); wireless telegraphy. spark telegraphy1898 an early method of radio-telegraphy in which high-frequency oscillations are set up in a transmitting aerial by the discharge of a highly charged… wireless1899 Wireless telephony or (less commonly) wireless telegraphy; the transmission and reception of radio waves, esp. ones carrying sound signals; this… marconigraphy1902 The system of radiotelegraphy invented by Marconi. Marconism1903 The theory or practice of Marconi's system of radiotelegraphy. radiography1904 = radio-telegraphy, n. W/T1914 wireless telegraphy; frequently attributive. spark1921 Short for spark telegraphy n. at compounds 4 (cf. senses compounds 2 1d).
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