“secondary focal point”的概念、定义、翻译、参考文献-科学参考

单词	secondary focal point
释义	secondary focal point 次焦点
随便看	subscribe government bond subscriber subscriber access line subscriber branch line subscriber-busy signal subscriber cable subscriber capital subscriber carrier telephone system subscriber carrier terminal subscriber circuit subscriber class circuit subscriber connecting equipment subscriber dialing subscriber equipment subscriber extension subscriber line subscriber line circuit subscriber line equipment subscriber loop subscriber meter subscriber multiple subscriber plant transmission index subscribers subscriber's apparatus subscriber's drop

科学参考收录了1248194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。