Adjustable impeller and the clearance between the boards to ensure efficient operation of the pump.
可调节叶轮与护板之间的间隙，保证泵的高效运行。
Variable Angle adjustment from the structure, the axial flow pump impeller with enormous wheels, easy to install adjustable Angle blade.
变角调节从构造来看，轴流泵叶轮具有巨大的轮毂，便于安装可调角度的叶片。
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