关节臂的英文

hinged arm

knuckle arm

• 关节:    joint; articulatio ...
• 臂:    arm
• 关节臂键:    knuckle arm key

例句与用法

1. 7 - joint spring - balanced articulated arm
   七关节臂
2. High accuracy arm with seven joints has a 1 . 12m operating radius making it convenient to operate
   高精度的七关节臂，工作半径达1 . 12米使用灵活方便，