1)clear channel,专用信道，开敞信道2)DCH,专用信道3)dedicated-wire channel,专用线信道4)ODCH:ODMA Dedicated Channel,ODMA专用信道5)private communication channel,专用通信信道6)open letter of credit,敞开信用证
用法例句
The study of a three stages forward pipeline realization for WCDMA BTS downlink DCH baseband process module;