“标准摄影镜头”的概念、定义、翻译、参考文献-科学参考

单词	标准摄影镜头
释义	标准摄影镜头 Encyclopedia 艺术学镜头种类释 standard lens, normal lens标准摄影镜头焦距与照相机所摄画幅对角线相等或相接近的摄影镜头。简称标准镜头、标头。
随便看	positive ray function positive real axis positive real control positive real function positive real number positive real part positive real system positive recurrent point positive recurrent state positive reinforcement positive relation positive result positive root positive root system positive rotation positive school of criminology positive selection positive self-adjoint operator positive self-regard positive semi-definite positive semi-definite form positive semi definite Hermitian matrix positive semi-definite Hermitian matrix positive semi-definite kernel positive semi definite matrix

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。