关节臂

【机】 hinged arm

关节的英语翻译：

articulation; joint; key links
【医】 arthr-; arthro-; arthron; article; articulatio; articulation
articulationes; articuli; articulus; artus; joint; junctura; syntaxis

臂的英语翻译：

arm
【医】 arm; brachia; brachio-; brachium; upper arm; upper limb