spiral water turbine

螺旋涡轮,he... ... ) turbopropeller plane 涡轮螺旋桨飞机 ) spiral water turbine 螺旋式水涡轮 ) helical worm gear 螺旋涡轮 ...

直角三角形_馆档网 ... "蜗漩涡流"," spiral vortex" "蜗旋水轮机"," spiral water turbine" "螺旋溶接管"," spiral welded pipe" ...