• 2022-07-01
    写出下图问题在极坐标系中上侧水平边界的应力边界条件[img=298x296]1803b386cecc627.jpg[/img]
    A: [img=186x108]1803b386d93fc99.jpg[/img]
    B: [img=186x108]1803b386e4a6c71.jpg[/img]
    C: [img=174x168]1803b386f0ec4ed.jpg[/img]
    D: [img=186x168]1803b386fb63dae.jpg[/img]