“medium wave propagation”的概念、定义、翻译、参考文献-科学参考

单词	medium wave propagation
释义	medium wave propagation Encyclopedia 工学电离层电波传播释 medium wave propagation中波传播波长从1000米到100米或频率从300千赫到3兆赫的无线电波的传播。
随便看	knowledge precipitation system knowledge pricing knowledge processing knowledge process outsourcing knowledge product knowledge production Knowledge Q-A system management knowledge quantitative evaluation knowledge quantity knowledge query and manipulation language knowledge query and manipulation language, KQML knowledge reasoning knowledge reduction knowledge redundancy knowledge representation knowledge representation and reasoning knowledge representation ontology knowledge resources knowledge retrieval knowledge reuse knowledge revolution knowledge science knowledge search knowledge self-organization process knowledge service

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。