counterbalance arm中文什么意思

平衡重杠杆臂

• counterbalance:    vt. 使平均，使平衡；补充，弥补； ...
• arm:    n. 1.〔pl., 罕 sing. ...
• air counterbalance:    气动平衡; 压缩空气平衡重体

例句与用法

1. Vr - arm curl 4820 - counterbalanced arms help deconditioned users
   Vr -二头肌练习器4820
2. Vr - arm extension 4825 - counterbalanced arms help deconditioned users
   Vr -三头肌伸展练习器4825
3. Vr - overhead press 4805 - counterbalanced arms help deconditioned users
   Vr -座式肩膊推举练习器4805