beam-arch composition

• 梁拱组合

beam-arch composition的用法和样例：

例句

1. Not only limited in the hybridizing of the conventional girder and arch, the hybrid system arch bridges nowadays have had new hybridizing of arches with other types of structures.
   组合体系拱桥已不仅限于传统的梁拱组合，还出现了拱与各种结构形式的新型组合。