The relationships between the points in space model and the dimensionalclassification of spherical four-bar linkage are also established.
建立了球面四杆机构的尺寸组合与空间模型上点之间的对应关系，进而讨论了球面四杆机构的尺寸型。
2
Thread dimensional specifications, minimum wall thickness and burst pressure, material classification, and requirements for marking identification were stipulated.
螺纹尺寸规格说明，最小壁厚和爆裂压力，材料分类，以及规定的标记标识的要求等。
3
Its methods are the classification integration, the three-dimensional integration and the purpose integration.