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Terms for subject Telecommunications containing flash signals | all forms | in specified order only
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busy-flash signal示忙信号
busy-flash signal忙闪信号
flash hook signal拍叉簧信号
hook flash signal拍叉簧信号
hookswitch flash signal拍叉簧信号原指用户拍钩键，使共电式交换机的信号灯闪亮，引起话务员注意，现沿用为电子式话机"R" 键的功能控制信号
hookswitch flash signal拍叉簧信号

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