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

以方镁石、镁铝晶石、铬为主晶相的中性耐火制品。

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，：顽火辉石、刚玉、晶石硅灰石。

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

晶石的其它应，晶石轴承及颜料等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.

在所有可能的晶石族成员中，铁铝晶石锰铝晶石被发现是最有效的(添加剂)。

The composition, technique and characters about the manganite based NTC thermistor materials were reviewed in this paper.

摘要本文对含锰晶石系列热敏电阻材料的组成、制备工艺性能给予了评述。