| 单词 | identification signal |
| 释义 | > as lemmasidentification signal identification signal n. ΚΠ 1918 E. S. Farrow Dict. Mil. Terms 305 Identification signals..which will identify the authority sending the communication..are assigned from division headquarters and each consists of one letter and one numeral. 1946 Happy Landings July 9/1 The identification signal could still be heard. 1995 D. J. Clausing Aviator's Guide to Navigation (ed. 3) ii. 28 The identification signal itself is a transmission of those three letters in Morse code. < as lemmas |
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