LOW RANGE RADIO ALTIMETER, a system that measures the vertical distance from the airplane to the terrain.

低空无线电高度表，一种测量飞机至地形的垂直距离的系统。

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LOW RANGE RADIO ALTIMETER, a system that measures the vertical distance from the airplane to the terrain.

低空无线电高度表，一种测量飞机至地形的垂直距离的系统。

youdao