low gravity fuel 低比重燃料

high-gravity fuel 高比重燃料

high gravity fuel 高比重燃料

gravity fuel feed 重力给油

fuel gravity tank 重力燃油柜

fuel gravity system 自流式燃料供给系统

diesel-fuel gravity test 柴油比重的测定

fuel oil gravity tank 燃油重力柜

gaseous fuel specific gravity 气体燃料的比重

fuel oil specific gravity 燃油比重