短語詞組短語balance vane pump [機(jī)]平衡葉片泵balance pump control panel 平衡泵控制板balance of feed pump 給水泵平衡balance beam engine pump 發(fā)動機(jī)平衡桿泵balance pressure of pump control 泵控壓力平衡控制balance plug of scavening pump 掃氣泵平衡塞balance e beam engine pump 發(fā)動機(jī)平衡桿泵 返回 balance pump