| 摘要 |
<p>The kit comprises three powders, the first of which is enclosed by a first labelled container having a first opacity (O1) and a first lightness value (L1), when formed into an opaque porcelain layer. The second powder is enclosed by second labelled container having a second opacity (O2) and a second lightness value (L2), when formed into the less opaque ceramic layer. The third powder enclosed by a third labelled container has a third opacity (O3) and a third lightness value (L3), when formed into the most opaque ceramic layer. The third opacity is greater than the second opacity and the second opacity is greater than the first opacity. Also, the third lightness value is greater then the second lightness value and the second lightness value is greater then the first lightness value.</p> |
