dual channel system

• 双通道系统

dual channel system的用法和样例：

例句

1. Properly arrange the construction of main highways which connect west China and middle part of China so as to give full play to the transportation system in western China.
   要同步安排好与西部地区连通的中部地区干线公路的建设，保证西部运输通道系统能力的发挥。