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本文从感光的基本原理出发,阐述了如何选用最佳的照相复制光源和曝光中的几个问题,最后介绍了重铬酸盐的暗反应和减少它所采用的方法。
In this paper, the basic principles of light-sensitive, elaborated on how to choose the best photographic copy light source and exposure to several problems, and finally introduced the dichromate dark reaction and reduce the method used.