Trust force and bending moment result in heat expansion are calculated by adopting beam theory of mechanics of materials and applying force component analysis method.
采用材料力学的梁理论，应用力法分析方法，计算出热膨胀导致的推力和弯矩。
The macro-and micro-failure theory of materials is a very important research subject of solid mechanics and material science.
材料的宏细观破坏理论是当前固体力学和材料科学研究的一个重要课题。
Materials which can be analysed and calculated by two levels are referred to as the composite materials, whereas the mechanics of composites is a mechanical theory of two levels.
凡能进行两层次分析与计算的材料便可称为复合材料，复合材料力学则是一种两层次的力学理论。
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