短語詞組短語centrifugal pump s impeller 離心泵葉輪water pump short impeller 水泵pump with oerhung impeller 懸臂葉輪泵pump impeller power 泵輪軸功率circulating pump impeller 循環(huán)泵葉輪pump impeller blade 水泵葉輪片dredging pump impeller 泥泵葉輪centrifugal pump impeller 離心泵葉輪pump impeller with housing 帶套的泵葉輪 返回 pump impeller