economy of fuel meaning in Chinese

节约燃料
燃料经济

But it also needs the continuing consume of fuel to keep pump running , so it reduces the economy of fuel . and its complex hydraulic system pollutes the environment , makes the repairing difficult and the features could n ' t be adjusted conveniently
但是传统的hps需要持续的能量消耗，降低了汽车的燃油经济性。同时其复杂的液压系统具有助力特性不可调整、污染环境、维修不便等缺点。