• 2022-06-30
    图示结构A点竖向位移(向上为正)为:[img=216x164]180316e554e41e4.jpg[/img]
    A: [img=58x48]180316e55f33665.jpg[/img]
    B: [img=46x46]180316e56d42edd.jpg[/img]
    C: [img=51x49]180316e5786556b.jpg[/img]
    D: [img=51x50]180316e5829a555.jpg[/img]