preflex composite beam的用法和樣例：
例句
- Nonlinear analysis method on the mechanical behavior of preflex composite beams was established with the nonlinear stress-strain curves of materials.
摘要採用材料非線性本構關係研究預彎組合梁的受力行為，建立預彎組合梁從預彎鋼樑加荷到結構破壞的非線性全過程分析方法。 - More than ten preflex composite beam bridges were designed and analyzed with this method, and excellent results were obtained.
利用該方法已完成了十餘座預彎組合梁橋的設計分析，取得了良好的計算結果。
