短語(yǔ)詞組短語(yǔ)cross -beam 橫梁;交叉束cross s beam 橫梁cross prestressed beam 交叉預(yù)應(yīng)力梁cross foundation beam 十字交叉基礎(chǔ)梁cross bearing beam 支撐梁uniform cross section beam 等截麪粱cross elastic beam 十字交叉彈性地基梁cross slope beam 橫斜梁 返回 cross beam