又一专用通信干线建成并投产大庆一秦皇岛微波通信工程是中国石油天然气总公司开发西部、稳定东部的“八五”期间的重点改造项目，它的建成将使大庆、吉林、辽河三大油田和东北输油管理局进入石油专用通信网，实现了长途电话自动拨号，同时，也为东北输油管道自动化管理和... Another dedicated communications trunk built and put into operation Daqing a Qinhuangdao microwave communications project is the China National Petroleum Corporation to develop the western part of the eastern part of the stability of the “Eighth Five-Year Plan” during the key reconstruction project, it will enable Daqing, Jilin, Liaohe three major oil fields and Northeast Oil Authority into the oil-specific communications network, to achieve long-distance telephone automatic dialing, but also for the Northeast oil pipeline automation and ...