“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	hypernormal dispersion hypernormal distribution hypernormal operator hypernova hyper nucleus hypernucleus hypernumber hypernym indexing hyperoctahedral graph hyperoctahedral group hyperoctahedron hyperoctant hyperon hyperon matter hyperon star hyperopia hyperorbital time scale hyperorthogonal hyperorthogonal basis hyperorthogonal group hyperosculation hyperosculation point hyperosmotic hyperosmotic solution hyperosmotic urine

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