短語(yǔ)詞組短語(yǔ)king -post truss 單立柱倒三角桁架inverted king post truss 倒單柱桁架king and queen post truss 立字桁架king bolt bush post truss 柱撐式三角桁架inverted impulse king post truss 倒單柱桁架 返回 king post truss