“OPAC (online public access catalog)”概念、定义、翻译-科学时代

单词	OPAC (online public access catalog)
释义	网络与多媒体词汇手册 OPAC (online public access catalog) 联机公共检索目录
随便看	frequency domain frequency domain frequency domain frequency domain frequency domain analysis frequency domain analyzer frequency domain method frequency domain method frequency domain synthesis frequency doubling frequency down-conversion frequency down-conversion frequency drift frequency drift frequency drift frequency drift rate frequency error frequency error frequency function frequency hopping frequency-hopping spread spectrum frequency hopping spread spectrum frequency hopping spread spectrum frequency-hopping spread spectrum (FHSS) frequency hopping spread spectrum (FHSS)

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。