“收缩光圈”概念、定义、翻译-科学时代

单词	收缩光圈
释义	工程与技术词汇手册 stopped-down aperture (SDA) 收缩光圈
随便看	social rank social rapport social rate of discount social readjustment social realism social realism social realism social realist social reconstruction social reform social reform social regulation social rehabilitation of offenders social reinforcement social relation social relation social relation social relation social relation of production social relations of production social relativity social releaser social relief social reorganization social reorganization

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。

stopped-down aperture (SDA)