术语 | dial pulse |
释义 | dial pulse 拨号脉冲;[拨号脉波] An interruption in the DC loop of a calling telephone.The interruption is produced by the breaking and making of the dial pulse contacts of a calling telephone when a digit is dialed. The loop current is interrupted once for each unit of value of the digit. 呼叫电话直流回路中的一种中断。产生这种中断是由于拨一个数字时切断和接通呼叫电 话的拨号脉冲接点所致。每拨一个数字中断一次回路电流。 |
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