Photometric evaluation of projectors ; simplified evaluation of projectors with non - rotationally symmetrical luminous intensity distribution for use in film and television studios and stages 聚光灯的光学评估.电影电视摄影室和舞台用的非旋转
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Photometric evaluation of projectors ; simplified evaluation of projectors with rotationally symmetrical luminous intensity distribution for the use in film and television studios and stages 聚光灯的光学评估.电影电视摄影室和舞台用的旋转对