“焦点--焦距--聚焦”概念、定义、翻译-科学时代

单词	焦点--焦距--聚焦
释义	工程与技术词汇手册 focus 焦点；焦距；聚焦
随便看	protectionism protectionism protectionism protectionism protectionism protectionism protectionism protectionism protectionism protectionist protectionist business practice protectionist measure protectionist policy protectionist policy protectionist policy protectionist policy protectionist trading practice protectionist trading practice--protectionist trading practice (PTP) protectionist trading practice (PTP) protection layer protection mask protection mimicry protection of copyright protection of female labourers protection of game

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。

focus