manual switchboard 人工交换台 ; [通信] 人工交换机 ; 手工控制配电盘
manual toll switchboard 长途人工接续台
manual multiple type switchboard 人工复式交换台
manual common battery switchboard 人工共电式交换台
dc manual switchboard 直流人工交换机
manual telephone switchboard 人工电话交换机
switchboard manual
总机手册
以上为机器翻译结果，长、整句建议使用 人工翻译 。
When computerized dialing systems were introduced, they replaced the need for manual telephone switchboards and, consequently, the switchboard operators that ran them.
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