1) counterweight control valve group
平衡重控制阀组件
2) counterweight control group
平衡重控制组件
3) counterweight control valve
平衡重控制阀
4) counterweight control valve assembly
平衡重控制阀总成
5) counterweight group
平衡重组件
6) control valve group
控制阀组件
参考词条