“multiple switchboard”的概念、定义、翻译、参考文献-科学参考

单词	multiple switchboard
释义	multiple switchboard [`mǝl·tǝ·pǝl `swich´bȯrd] ^ELECTRICITY Manual telephone switchboard in which each subscriber line is attached to two or more jacks, to be within reach of several operators.
随便看	backshore terrace back shot backsight backsight method back siphonage back slope back solution backspace backspring backstay backstep sequence back stoping backswamp backswamp depression back sweetening backtalk backthrusting back titration back-to-front ratio backtracking backup backup arrangement backup relay backup strip backup system

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