duì guāng
意思解释：（To light）照相时，调整焦点距离、光圈大小和曝光时间。 使用显微镜、望远镜等光学仪器时，调节光线。
照相时，调整焦点距离、光圈大小和曝光时间。1930年《中华百科辞典》:“对光(Focusing):摄影时使被摄物返来之光线，射入镜头结成焦点于软片或软片之感光面之谓也。”1936年《科学画报》第三卷第二十三期:“观影匣可侧转，以备横拍…
When taking a picture, adjust size of focal distance, aperture and time of exposure. 1930 China 100 divisions dictionary : Does the bank complainFocusing): Lot of reed of tribute of Wen basketry pen carves of Ma of pay of discharge of of whetstoning of Ling of of Chen Di of Wen of gully of low Fang Ke of cutting of the feet of Cong of of Lu of thick Pi uncovers defect! 936 year scientific pictorial the 3rd the 23rd period: of of Mi of Buddhist templeput on the brakes of Huan of postscript of Ang private school member negative Xiao copy
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