- simple chain
- simple hinge
- 单: singular number fate; destin ...
- 铰链: hinge; butt hinge; gemel; co ...
- 单铰拱: one hinged arch; one-hinged arch; single hinged arch; single-hinged arch
- 铰链: hinge; butt hinge; gemel; coupling head; link 铰链接合 hinge joint
- 单铰拱梁: one-pin arch girder; one-pinned arched girder
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