Others from V or X shapes. Some canopies are a single piece and some are two pieces with a hydraulic ram at the hinge-joint.
另从V或X形。一些檐篷是一个单一的作品，有些是两件与液压内存在铰链联合。
2
On the basis of analysing the structural characteristics of the motion-decoupling hydraulic servo shoulder joint, virtual design method is used to design and analyse the joint.
在分析解耦型液压伺服肩关节结构特点的基础上，运用虚拟设计方法对关节进行设计和分析。
3
In the light of the disadvantages and limitation of the existing unscrewing type or shearing type safety joints, a hydraulic sleeve type safety joint is designed.