明度视觉感知扮演重要角色。
The third, Lightness plays an important role in visual perception.
当人们游离其中，随着材质透明度的变化，灯光照明层次变化，也展开了一段领略通透延展或模糊，暧昧的视觉游戏。
When people are free of which, along with the change ofmaterial transparency, lighting levels, also launched a taste of transparent extension or vague, ambiguous visual game.
天然牙的视觉外观除了颜色的三要素色相、明度、饱和度以外，还有许多第二光学特征：半透性、浑浊度、晕色、表面光泽度、荧光性，其中以半透性最为重要。
In addition to value, hue and chroma, there are many subtle secondary optical properties of natural human tooth, such as translucency, opacity, iridescence, surface gloss and fluorescence.
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