方位和高度是音频的重要属性。
Azimuth and elevation are important properties for aural presentation.
一个完全数据模型应该以这三个尺寸为基础：基准、方位和高度。
A complete data model should be based on these three dimensions: ground, position, and elevation.
能够测定目标的高度方位和距离的雷达。
Radar that will report altitude as well as azimuth and distance of a target.
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