词语平衡杆
解释rock arm
rock arm〔名词〕摇臂详细»
平衡杆〔名词〕poise详细»
平衡杆balance bar;balance beam详细»
平衡杆balance beam stabilizer bar详细»
平衡杆balance stem;hoosier pole详细»
平衡杆balance arm;operating arm详细»
平衡杆balancing arm;equalizing bar详细»