| 单词 | secrecy system |
| 释义 | > as lemmassecrecy system secrecy system n. a system for ensuring the secrecy of transmitted speech by scrambling it at the transmitter. ΚΠ 1940 Chambers's Techn. Dict. 752/2 Secrecy (or privacy) system, modification of speech-frequencies within the speech-band, so that during transmission from a radio transmitter to a receiver the signal is unintelligible and cannot be tapped. 1949 Bell System Techn. Jrnl. 28 656 (title) Communication theory of secrecy systems. < as lemmas |
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