“high-frequency backscattering”的概念、定义、翻译、参考文献-科学参考

单词	high-frequency backscattering
释义	high-frequency backscattering Encyclopedia 工学短波传播释 high-frequency backscattering高频返回散射斜向入射到电离层的高频段（3～30兆赫）无线电波，经电离层反射（可能多次）后因地面地形不平坦和电气不均匀性而向四面八方散射的现象。其中一小部分电波能量沿相反方向（路径可与以前相同或不同），由电离层反射折回到地面电波发射点。
随便看	British Museum Evaluation British National Bibliography，BNB British National Book Centre British National Corpus（BNC） British national Examination System of Occupational Safety and Health Level British National Film and Television School British National Media Museum British National Portrait Gallery British North America Act，1867 British Nuclear Energy Conference British Nuclear Energy Society British Nuclear Laboratories British Office of Communications British Office of Rail Regulation British Open British Open (snooker) British Parliament British Periodicals up to the Early 19th Century British Photography British planning act British Polo Professional League British Public Record Office British Royal Philharmonic Orchestra British Rural Cinema Pilot Scheme British Sky Broadcasting

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