对旋叶轮机  counter-rotating turbo machinery

对旋轴流叶轮  Contra-rotating Axial Flow Impellers

对轮旋压  counter roller spinning

相对叶轮泵-背靠背叶轮泵  pump with opposed impellers

叶轮对转轴流扇风机  contour plan

蜗旋叶轮  spiral impeller

旋叶轮机  propeller pump; propeller turbine

叶轮旋转  impeller rotation

预旋轮叶  prewhirl vane

锥形螺旋叶轮  Conical spiral impeller

变矩器叶轮轮毂  converter impeller hub; torque converter impeller hub

风扇叶轮叶片  impeller vane

三叶叶轮  Triplicate blade impeller

双流道叶轮叶片绘型  The Drawing of Vane of Double Channel Impeller

套装叶轮叶片  suite impeller blades

涡轮叶轮  Turbine impeller; turbine wheel; turbo wheel

叶轮轮毂  impeller hub

叶轮轮毂端面  impeller hub end surface

叶轮轮毂端直径  impeller hub end diameter