英语词汇“permanent virtual circuit”的读音、翻译、释义、用法及例句-语文网

词汇	permanent virtual circuit
释义	permanent virtual circuit 永久虚拟线路（=PVC）在每个DTE（资料终端设备）上，具有永久分配给它的逻辑通道的一种虚拟线路。不需要呼叫建立协定。
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