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
The results are compared with those obtained by the conventional hinge-joint method and the average parameter method, obtaining conclusions which are useful in designing practice.
将精确解的结果与习用的铰链法和平均参数法加以比较，得出了对实际设计工作有益的结论。
3
Rather than a flexible lower jaw joint, they had a hinge between the upper jaws and the rest of the skull.