短語詞組短語pumping g rate 抽運速率feasible pumping rate 可抽水速度pumping with constant rate 定流量抽水variable pumping rate 可變供油速率higher pumping rate 高供油速率pumping at constant rate 定流量抽水air pumping rate 抽氣率critical pumping rate 臨界排量high pumping rate 大泵量 返回 pumping rate