runway heading的意思|示意

With the engines running, the 747-400 burns far more fuel than it needs to as it waits in line behind 20 or so other aircraft heading for the runway.

在排队等待前面20架飞机冲向跑道的过程中，这架747 - 400的引擎需要持续运作，因而比其他飞机所需要的燃料更多。

But we need to use rudder to correct our heading in line with the runway at the right moment of touchdown or we will run out of runway.

在接地的一瞬间，利用方向舵控制飞机使机头指向与中心线重合，以防止飞机冲出跑道。

After take-off maintain runway heading and climb to900 m.

起飞后，保持跑道航向爬升到900米。