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| 文档标题： | 指关节 |
| 发布时间： | 2025-06-20 15:01:41 |
| 文档简介： | "A knuckle joint is a mechanical joint used to connect two rods under tensile or compressive loads. It consists of a knuckle pin, eye, fork, and collar, allowing limited angular movement between the connected rods. This makes it ideal for |