供油管线
/ˈɔɪl səplˈaɪ ˈlaɪn/
n
English: oil supply line · 供油管线
English · oil supply lineEspañol · tubo de suministro de petróleoFrançais · canalisation d’alimentation
释义：Tube injecting heating oil into the burner and toward the nozzle.