试验结果证实了页岩与水基流体之间存在着渗透现象，且页岩是一个非理想性的半透膜。

Therefore, osmotic phenomenon exists in the system of shale and water based fluid, but shale is a non-perfect semipermeable membrane.

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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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目的研究制作工艺对牙科陶瓷半透性和颜色的影响。

Objective To study the influence of manufacture technique on the translucency and color of dental porcelain.

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