“底-正摄影系统”的概念、定义、翻译、参考文献-科学参考

单词	底-正摄影系统
释义	底-正摄影系统 Encyclopedia 艺术学摄影工艺释 negative-positive photographic system底-正摄影系统感光材料经曝光冲洗获得负像后称为底片，印相纸经由底片进行接触印相冲洗获得正像后，或者放大纸经由底片进行放大冲洗获得正像后，称为照片，此摄影成像系统称为底-正摄影系统。又称负-正摄影系统。
随便看	set of convergence set of curves set of decisions set of definition set of degeneracy set of degrees set of elements set of equations set of equivalent positions set of events set-off set of fields set of finite type set of first category set of functionals set of functions set of generators set of generators of a module set of greater power Set of Identifications, Measurements, and Bibliography for Astronomical Data set of identifications,measurements and bibliography for astronomical data set of imprimitivity set of infinite type set of information set of integers

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。