片语
arch-beam structure拱梁结构
arch-beam composite aqueduct拱梁组合式渡槽
method of arch-beam拱梁法
arch-beam composite拱梁组合
arch-beam composite bridge拱梁组合
arch-beam composite bridges拱梁组合桥
arch-beam composite system拱梁组合体系
arch-beam aqueduct拱梁组合式渡槽
arch-beam composition structure拱梁组合结构