common-battery signaling

网络释义

1.	共电式发信号程式设计语言"_馆档网 ... "通用性"," commonality" "共电式发信号"," common-battery signaling" "常用"," commonly used" ... www.guandang.com
2.	共电式信号法 55???? ... 共用线 common wire 共电式信号法 common-battery signaling 共电交换台（总机） common-battery switchboard ... www.docstoc.com

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