“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	power system design power system development planning power system dispatcher flow power system dispatching power system fault power system insulation levels power system load power system oscillation power system overvoltage and insulation coordination power system planning power system relay protection configuration power system reliability statistics power system security and stability control power systems planning power system stability power system stability control device power system stabilizer power system telemechanics power system test of launch vehicle power test power theorem power theory power to conclude treaties power to confer honours power to declare war and make peace

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。