These above ground storage tanks and buried cutout valves are part of the california pipeline network supplying jet fuel to major airports in san francisco and los angeles as well as gasoline and diesel fuel for other transportation needs 这些储油罐和埋在地下的终端阀门是加州输油管网的一部份,这些管网,给旧金山和洛杉矶的主要机场提供飞机燃料,也给其它交通工具提供汽油和柴油燃料。