“超外差接收”的概念、定义、翻译、参考文献-科学参考

单词	超外差接收
释义	超外差接收 Encyclopedia 工学【通信基础理论】释 superheterodyne receiving超外差接收将接收到的已调高频信号（即调制后的高频信号）送到混频器，然后与本地振荡器所产生的高频信号进行混频，在其输出端得到的波形包络形状与输入高频信号相同，但频率却降为某一固定中间频率（简称中频）的信号接收技术。
随便看	Principles of Environmental Physics principles of handling disputes over the ownership of archives principles of heat treatments Principles of Information Science Principles of Instructional Design principles of insurance investment principles of insurance law Principles of International Commercial Contracts principles of international environmental law principles of international tax law principles of law principles of lexical inclusion principles of lexicographical definition Principles of Linguistic Change principles of maritime delimitation principles of media human resource management Principles of Neuropsychology Principles of Party Spirit in Journalism Principles of philosophy principles of quantum mechanics principles of records appraisal principles of securities information disclosure principles of sense arrangement principles of sense discrimination principles of sense division

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。