| 单词 | space telegraphy | 
| 释义 | > as lemmasspace telegraphy   space telegraphy  n. now historical = radio-telegraphy n. ΘΚΠ society > communication > telecommunication > telegraphy or telephony > telegraphy > 			[noun]		 > types or systems of > radio-telegraphy space telegraphy1897 wireless telegraphy1897 radio-telegraphy1898 spark telegraphy1898 wireless1899 marconigraphy1902 Marconism1903 radiography1904 W/T1914 spark1921 1897    Proc. Physical Soc. 16 58  				Discrimination by syntony is possible with magnetic systems of space telegraphy. 1902    G. Marconi in  Proc. Royal Soc. 71 344  				Some long-distance space telegraphy tests [were] carried out towards the end of February last. 1983    Isis 74 349  				Preece was apparently under the impression that Hertz's work was related to his own interest in methods of space telegraphy by induced currents. < as lemmas | 
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