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

单词	closed-circuit telegraph system
释义	closed-circuit telegraph system [¦klōzd ¦sǝr·kǝt `tel·ǝ´graf ´sis·tǝm] ^{COMMUNICATIONS} Telegraph system in which, when no station is transmitting, the circuit is closed and current flows through the circuit.
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