未净化水水泵叶轮螺母
raw water pump impeller nut
固定轮叶水轮机
fixed blade water turbine
fixed vane
可动轮叶水轮机
movable-blade water turbine
疏水泵叶轮切割实践
Practice of cutting effluient pump impeller
双向灯泡贯流式水轮水泵机组
double-acting light bulb tubular turbine and water pump set
水泵水轮机全特性
complete characteristic curves of pump turbine
循环水泵叶轮
circulation pomp impeller
表面水处理
disposal of surface water