短語詞組短語bottom circulating pump 塔底循環(huán)泵bottom hole pump 井底深井泵;井底沉沒式泵bottom inlet pump coupling 底吸泵聯(lián)軸器bottom suction pump 底吸泵bottom inlet pump 底吸泵bottom suction pump coupling 底吸泵聯(lián)軸器bottom m pump 深井泵bottom suction centrifugal pump 底吸式離心泵bottom m hole pump 井底深井泵 返回 bottom pump