alumina magnesia carbon brick

例句：

1. 1.The alumina is used to make aluminum products.
   该铝土矿用于制造铝产品。
2. 2. Alumina is an important raw material for the production of aluminum.
   铝土矿是生产铝的重要原料。
3. 3.The alumina mine is located in the southern part of China.
   该铝土矿位于中国南部。
4. 1. Magnesia is a common mineral found in many soils.
   氧化镁是一种在许多土壤中发现的常见矿物。
5. 2. Magnesia is used as a catalyst in chemical reactions.
   氧化镁用作化学反应的催化剂。
6. 3. The magnesia was extracted from the earth's crust.
   氧化镁是从地球的地壳中提取出来的。
7. 1. Carbon brick is used as a heating element in furnaces.
   碳砖用作炉子的加热元件。
8. 2. The carbon brick was tested for its resistance to fire.
   碳砖被测试以检查其抗火性能。
9. 3. The construction industry uses carbon bricks as building materials.
   建筑业使用碳砖作为建筑材料。