corundum

include capacitance mullite, capacitance zircon mullite, capacitance magnesia-alumina spinel, capacitance zircon corundum,diamantane, and corundum-mullite products.

体系。产品有莫来、莫来、镁铝尖晶、刚玉、白刚玉、刚玉-莫来制品等。

The exoplanet's atmosphere condenses out minerals such as enstatite, corundum, spinel, and wollastonite.

这颗系外行星的大气冷凝后产生矿物，如：顽火辉、刚玉、尖晶和硅灰。

, On the Mohs hardness scale, zoisite and hornblende (or tschermakite) have hardnesses about about 6½, whereas corundum has a hardness of 9.

比如，黝帘和角闪（或者钙镁闪）的摩氏硬度为6.5，而刚玉则达到9。