待解决 悬赏分:1 - 离问题结束还有 计算立杆的截面回转半径问题补充:匿名 2013-05-23 12:21:38 Calculate the cross-section radius of gyration of the pole 匿名 2013-05-23 12:23:18 Calculate the cross-sectional pole swing radius 匿名 2013-05-23 12:24:58 Calculates the erecting pole ...