HDLC, which is widely applied to control protocol of Data Link Layer, is based on bit.

HDLC是一种面向比特的链路控制规程，广泛用作数据链路层的控制协议。

youdao

HDLC, which is widely applied to control protocol of Data Link Layer, is based on bit.

HDLC是一种面向比特的链路控制规程，广泛用作数据链路层的控制协议。

youdao