Material combination的用法和樣例：
例句
- Polymer ball bearings can be made from a variety of materials and material combinations.
聚合物球軸承可由多種材料和材料組合製造。 - RC is a composite material with rebar and concrete that have different physical mechanics characters, and its constitutive relationship is relatively complex.
摘要鋼筋混凝土是由鋼筋和混凝土兩種具有不同物理力學性質的材料組合而成的複合材料，其本構模型比較複雜。
