[通信]
call accepted signal
... calculagraph 长途台计时印字设备 call abandonment probability 呼叫放弃概率 call accepted signal 呼叫接受信号 ...
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短语
呼叫不接受信号
[通信]
call not accepted signal
不接受呼叫信号
call not accepted signal
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call accepted signal
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call-accepted signal
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