“closed-circuit communications system”的概念、定义、翻译、参考文献-科学参考

单词	closed-circuit communications system
释义	closed-circuit communications system [¦klōzd ¦sǝr·kǝt kǝ´myü·nǝ`kā·shǝnz ´sis·tǝm] ^{COMMUNICATIONS} A communications systems which is entirely self-contained, and does not exchange intelligence with other facilities and systems.
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