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

1.以方镁石、镁铝尖晶石、铬为主晶相的中性耐制品。

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

2.这颗系外行星的大气冷凝后产生，：辉石、刚玉、尖晶石和硅灰石。

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

3.尖晶石的其它应用，尖晶石轴承及颜料等也取得了较大的发展。

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

4.在所有可能的尖晶石族成员中，铁铝尖晶石和锰铝尖晶石被发现是最有效的(添加剂)。