altitudes海拔altituden.高度；海拔；高地Altitude Alerting Unit高度报警器altitude marking radar高度指示雷达altitude-hole effect高度空穴效应altitude of the apogee远地点高度altitude control valve水位控制阀altitude summary table概略高程表altitude axis precision俯仰轴系精度altitude grade gasoline高空使用等级的汽油Altitude classification高程分级Altitude Sensing System高度传感系统