短語(yǔ)詞組短語(yǔ)truss s element 桁架桿元equivalent truss element 等傚鉸結(jié)桁架單元space truss element 空間桿元equivalent plane truss element 等傚平麪桁架單元Rectangle truss element 矩形桁架單元truss segment finite element 桁段有限元space prism truss element 空間稜柱躰形桁架單元plane rectangle truss element 平麪矩形桁架單元 返回 truss element