knuckle joint
参考词典中knuckle joint的常规释义：
基本释义
- 肘形连接，叉形铰链接合，叉形接头
英英解释
2个名词解释
- a joint of a finger when the fist is closed
[同] knuckle, knuckle joint, metacarpophalangeal joint - a joint allowing movement in one plane only
[同] hinge joint, knuckle joint
点击查看……- a joint of a finger when the fist is closed
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