The louvers may be adjusted so that they reject summer radiation, admit overcast sky luminance or act as light shelves, depending on the nature of day and the requirements of each storey.
百叶窗可以调节以阻挡夏天的辐射、接受多云天气的自然光或充当灯架，这将取决于天气情况和每层的具体要求。
Photometers are specifically designed to measure emitted, reflected or transmitted light in photometric terms of luminous flux, luminance, illuminance or luminous intensity.
光度计是专门用于测量发射，反射或透射光的光通量，亮度，照度或发光强度等。
The paper studies the influence of luminance, luminance ratio and the light sources on the lighting environment and provides reference and gist for the illumination design and further research.
目的研究亮度、亮度比、光源等因素对照明环境的影响，为照明设计的进一步研究提供参考和依据。
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