“telephone circuit”的概念、定义、翻译、参考文献-科学参考

单词	telephone circuit
释义	telephone circuit [`tel·ǝ´fōn ´sǝr·kǝt] ^ELECTRICITY The complete circuit over which audio and signaling currents travel in a telephone system between the two telephone subscribers in communication with each other; the circuit usually consists of insulated conductors, as ground returns are now rarely used in telephony.
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