• 2022-07-23
    写出下图问题在极坐标系中上端水平边界的的应力边界条件[img=298x325]1803b3870c26cc2.jpg[/img]
    A: [img=200x168]1803b387175aee7.jpg[/img]
    B: [img=186x168]1803b3872269944.jpg[/img]
    C: [img=200x168]1803b3872e2e195.jpg[/img]
    D: [img=276x180]1803b387386cc4d.jpg[/img]