短语词组短语delay time dial [通信]延时拨盘fine delay dial 延时微调刻度Delay Dial Signaling 延迟拨号信令fine abrasive delay dial 延时微调刻度range -delay dial 距离coarse delay dial 粗延时度盘dial Delay 拨号后延迟Post Dial Delay 这也叫做拨号后延迟 返回 delay dial