权威例句
PPP in HDLC FramingPPP in HDLC FramingPPP in HDLC-like FramingPPP in HDLC-like FramingRfc 1662: ppp in hdlc-like framingPPP in a Real-time Oriented HDLC-like FramingPPP in HDLC-like FramingPPP in a Real-time Oriented HDLC-like Framing基于Packet Tracer的HDLC、PPP和Frame Relay仿真分析PPP in a Real-time Oriented HDLC-like Framing
