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height above average terrain中文是什么意思

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用"height above average terrain"造句"height above average terrain"怎么读"height above average terrain" in a sentence

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  • 地面平均高度

百科解释

Height above average terrain (HAAT) (or less popularly, EHAAT, Effective Height Above Average Terrain) is a measure of how high an antenna site is above the surrounding landscape. HAAT is used extensively in FM radio and television, as it is more important than effective radiated power (ERP) in determining the range of broadcasts (VHF and UHF in particular, as they are line of sight transmissions).
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