spherical pivot four-bar mechanism

例句：

1. 1. The design of thisspherical pivot four-barmechanism is very innovative.
   这个球面支点四杆机构的设计理念非常创新。
2. 2. Thespherical pivot four-barmechanism has been widely used in various industrialapplications.
   球面支点四杆机构在各种工业应用中得到了广泛应用。
3. 3. Thespherical pivot four-barmechanism is a complex mechanical system that requirescareful design and implementation.
   球面支点四杆机构是一个复杂的机械系统，需要仔细设计和实施。