双管道系统的英文

double duct system

• 双:    two; twin; both; d ...
• 管道:    pipeline; channel; ...
• 系统:    system

例句与用法

1. This was a twin pipeline . the cost of construction was about $ 800 , 000 . the daily volume of water transferred could reach 9 mg
   第三条海底输水管建成，为一双管道系统，工程费用约80万港元，输水量最高可达900万加仑。