交输，燃油支管之间的交连设备。 可使燃油从飞机一侧流向邻近的发动机或在机身另一侧的发动机。
CROSSFEED, An interconnection between fuel manifolds for fuel flow from one side of the airplane to an adjacent engine or one on the other side.
APU通常从左发动机供油管路获得燃油，如果交输活门打开，右发动机供油管路也可以供应apu燃油。
The APU usually takes its fuel supply from the LH engine-feed line, but when the cross-feed valve is open, the RH engine-feed line can also supply the APU with fuel.
这种燃油税制将每辆汽车要交的养路费转换成税费，在道路等公共设施日益成为一种稀缺资源的大背景下，更多地体现了“多用多缴，少用少缴”的公平原则。
This convertion reflects the the principle of fairness just as "more pay more, or pay less" when roads and other public facilities are increasingly becoming scarce resources.
这种燃油税制将每辆汽车要交的养路费转换成税费，在道路等公共设施日益成为一种稀缺资源的大背景下，更多地体现了“多用多缴，少用少缴”的公平原则。
This convertion reflects the the principle of fairness just as "more pay more, or pay less" when roads and other public facilities are increasingly becoming scarce resources.
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