采用基于CCD相机和朗伯靶的间接方法，研制一套点聚焦聚光设备的能流密度分布测量装置。
By using an indirect method based on CCD camera and Lambert target, a flux density distribution measurement system of point focusing concentrating equipment is developed.
雪层内太阳辐射能量的分布遵循朗伯定律。
The distribution of solar radiation energy in a snow layer depends on the Lambert's law.
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