hard brittle material的用法和樣例：
例句
- The validity of this method has been confirmed by analyzing residual Vickers indent on quasi-plastic ceramic and brittle glass respectively.
基於這些創新理論，研製了不同類型的脆性材料性能測試儀。 - Concrete is a kind of brittle material, increasing its strength will result in the rising of brittleness, which restrict its further application in engineering structures.
混凝土是一種脆性材料，當提高其強度時，它的脆性會有較大幅度增大，這限制了它在工程結構中的進一步應用。
