Super- hardness materials的用法和樣例：
例句
- One of the project's goals was to reduce the total weight of the car, by making extensive use of lightweight materials.
其中該項目的目標是減少總重量車通過廣泛採用輕質材料。 - In heterogeneous anisotropic materials the heat flow vector and conductivity are more complex.
在各向異性的非均質材料中，熱流向量和熱導率很複雜。
