composite girder的用法和样例：
例句
- And it can be used for designing composite I-beam and I-typed crane beam.
这对工程上组合梁及吊车梁的设计具有实际意义。 - Nonlinear analysis method on the mechanical behavior of preflex composite beams was established with the nonlinear stress-strain curves of materials.
摘要采用材料非线性本构关系研究预弯组合梁的受力行为，建立预弯组合梁从预弯钢梁加荷到结构破坏的非线性全过程分析方法。
