For many years researchers have been trying to develop a synthetic material with the same light-scattering properties as an opal, by etching patterns into various materials. That approach has failed.

多年来研究者们一直致力于开发一种与猫眼石一样有散射特性的合成材料，他们在各种各样的材料中蚀刻图案，但是都无功而返。

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Measurements of polarized properties of atmospheric scattering radiation is one of an effective means of investigating the optical and physical parameters.

大气散射辐射偏振特性测量是研究大气光学和物理特性的有效手段之一。

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This coarse surface causes light scattering and changes original properties of the light absorption and reflection, which makes original image become fading and mildewing.

这种粗糙表面可导致对光的散射，改变原有影像对光的吸收和反射的特性，从视觉上让人感觉到黑白照片影像变得模糊、淡化。

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