Back Water  回流; 壅水; 回水; 背水; 倒划; 反划

back water {paddle}  回水

back water curve  洄水曲线; 壅水曲线

back water load  回水负载

back water pump  回水泵

back-water  回流; 壅水; 回水; 背水; 回流水流

back-water of ash field  灰场回水

back-water valve  回水阀

back-water=backwater  回流水流

bounce-back water  反冲洗

BWV (back-water valve)  回水阀

choking back water  压力系数

Irrigate water back to undergroundartificially  人工回灌

variation reach of back water  回水变动区

Water Back  水管背壁

water back-flow  返水

water-back up area  回水区

high-pressure feed-and back-water circulating system  高压供回水循环系统

Abnormal water hammer  异常水锤