It`s made from periclasite,magnesite aluminium spinel,chrome ore as raw material.

以方镁、镁铝尖、矿为主相的中性耐火制品。

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，：顽火辉、刚玉、尖和硅灰。

The development and application of raw minerals and products of spinels are also briefly introduced.

尖的其它应用，尖轴承及也取得了较大的发展。

From all possible members of the spinel groups， hercynite and galaxite， were found to be the most efficient.

在所有可能的尖矿族成员中，铁铝尖和锰铝尖被发现是最有效的(添加剂)。