“sky wave propagation for low frequency”的概念、定义、翻译、参考文献-科学参考

单词	sky wave propagation for low frequency
释义	sky wave propagation for low frequency Encyclopedia 工学电离层电波传播释 sky wave propagation for low frequency低频天波传播地面发射的频率为30～300千赫的无线电波，经电离层反射再回到地面的传播方式。
随便看	perylene ligands to G-quadruplex PES Pescara PE screen completion technology for horizontal well Peshawar Pesin Pesin theory pessimistic criterion pessimistic philosophy of life pessmistic explanatory style pessulus pest pest agricultural control pestalotiopsis needle blight of pine PEST analysis pest control operation Pest Control Science of Grassland：Volume Ⅰ——Grassland Rodents Science pest coordinate regulation pest damage level prediction pest development regulation peste des petits ruminants peste des petits ruminants virus，PPRV pest field diagnostic technology pest genetic control technology pest high-throughput detection technique

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。