alumina single crystal

例句：

1. 1. The aluminum alloyis used in the production of aircraft parts.
   这种铝合金用于制造飞机部件。
2. 2. Aluminum foil is commonly used for wrappingfood to prevent it from spoiling.
   铝箔常用于包裹食物以防止其变质。
3. 3.The process of extracting aluminum from bauxite involves heating the ore andthen separating the aluminum oxide.
   从铝土矿中提取铝的过程涉及加热矿石并分离氧化铝。