矾土的英文：
alumina
alumine

The United States was vulnerable to shortages of chrome, bauxite, and platinum.
美国的弱点是缺少铬、矾土和铂。

The United States was vulnerable to shortages of chrome, bauxite, and platinum
美国的弱点是缺少铬、矾土和铂。

A pear - shaped synthetic sapphire,ruby,or other alumina - based gem,produced by fusing and tinting alumina.
人造宝石一种通过将铝熔化和染色而制成的梨形合成蓝宝石、红宝石或其它矾土宝石

Chemical analysis methods for white fused alumina and pink fused alumina
白刚玉、铬刚玉化学分析方法

A pear - shaped synthetic sapphire,ruby,or other alumina - based gem,produced by fusing and tinting alumina.
人造宝石一种通过将铝熔化和染色而制成的梨形合成蓝宝石、红宝石或其它矾土宝石

The catalysis is brought about by the tremendous platinum specks spreaded in the alumina stuff with many tiny holes
起催化作用的是大量微小的铂颗粒分布在有许多微孔的氧化铝材料中。

The inductor is of dismountable jet type with air-cooling. The pot is lined with double insulation of chamotte and alumina.
感应体采用可拆式带风冷大功率喷流型感应体。炉体内衬采用粘土质及高铝质耐火材料构成的双层保温结构。

Typically, these membranes are made from porous carbon, zirconium oxide, or alumina, although a wide range of materials are being tested.
虽然大量的材料尚处于试验阶段,但通常典型膜可由多孔碳材,氧化锆和矾土制成。

In practice, two semisilvered or aluminized glass optical flats from the reflecting boundary surface.
实际上，两块半镀银的或镀铝的光学平面玻璃构成了反射界面。