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单词	positive focal plane
释义	positive focal plane photo plane Photo plane at an angle of depression of 18°.The plane occupied by the film at the focal point of the lens. Also called a positive focal plane.
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英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。