“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	Water Conservancy Construction and Management water conservancy critical information infrastructure water conservancy cyber security system water conservancy data center water conservancy development planning water conservancy economics water conservancy e-government system water conservancy engineering danger removal and reinforcement water conservancy engineering technical appraisal Water Conservancy Engineering Technology in Ancient Chinese Cities Water Conservancy History Research Association of Japan water conservancy in ancient Chang’an city water conservancy in ancient Ganzhou city water conservancy in ancient Kaifeng city water conservancy in ancient Luoyang city water conservancy in ancient Nanjing city water conservancy in ancient Suzhou city water conservancy information classification water conservancy information guarantee system water conservancy information management water conservancy information network water conservancy information resource planning water conservancy information resource system water conservancy informatization water conservancy informatization organization system

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。