短語詞組短語low -specific speed 低比轉(zhuǎn)數(shù)ultra -low-specific-speed 超低比轉(zhuǎn)數(shù)super -low specific speed centrifugal pump 超低比轉(zhuǎn)速離心泵low specific -speed centrifugal pump 低比轉(zhuǎn)速離心泵Ultra -low specific speed impeller 超低比速葉輪 返回 low specific-speed