coupling rod bushing联轴杆衬套
telescopic coupling rod可伸缩的连接杆;可伸缩的毗邻杆
coupling rod pin联轴杆轴销
triangular coupling rod三角连杆
rod coupling[机] 杆联接器;活塞杆连接器;杆联接;翻译
channel rod coupling槽铁接头
male rod coupling tap钻杆接头公锥
drill rod coupling钻杆接箍
sucker-rod coupling[油气] 抽油杆接箍