材料Material 铝Aluminium(6063-T5) 单位质量 Weight: 0.50kg/m 供货长度 Length:6m 集合惯性 Mass of Inertia:lx:0.72cm4 ly:0.72cm4 截面惯性 Section Modulus:Zx:0.72cm3 Zy:0.72cm3