... 闭式叶轮 shrouded impeller 变矩桨叶 Variable Pitch Blade 不堵塞式叶轮 channel(type) impeller ...
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variable pitch helical blade 变螺距螺旋面
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Once the program is loaded, only a few parameters are given, the development drawings of variable pitch helical blade will be obtained.
该程序一经调用,只要给出几个相关的参数,即可绘出变螺距螺旋面展开图。
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