“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	records and archives retrieval Records and Maps of the Nine Garrison Zons records center records classification outline Records Concerning Life Tending and Lifespan Lengthening Records Continuum Research Group of Australian Monash University records continuum theory Records Discovering Calligraphic Inscriptions all over China Records/Documents Management record setting records for standard test Records Made After My Guests Have Left records management Records Management Journal Records management：Systems and Administration Records of All Immortals of the Rongcheng Records of All Immortals of the Three Caverns Records of a Northern Trip Records of Beijing Records of Birds Records of Buddhist Monasteries in Luoyang Records of Campaigns to Overthrow the Southern Song Dynasty Records of Changan City Records of Changan City and Luoyang City in Tang Dynasty Records of Chinese Nation by Liu Shipei

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。