“attendant's switchboard”的概念、定义、翻译、参考文献-科学参考

单词	attendant's switchboard
释义	attendant's switchboard [ǝ`ten·dǝns `swich´bȯrd] ^{COMMUNICATIONS} Switchboard of one or more positions in a central-office location which permits the central-office operator to receive, transmit, or cut in on a call to or from one of the lines which the office services.
随便看	pelouse pelphyte pelsparite peltate Peltier coefficient Peltier effect Pelton turbine Pelton wheel pelvic cavity pelvic fin pelvic girdle pelvic index pelvis pelviscope Pelycosauria pelyte pemphigoid pemphigus pemphigus contageosus pen Penaeidea penalty function pencatite pencil pencil beam

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