bar linkage的用法和样例：
例句
- The approach constructs all the feasible fixture plans of a part with linear and circular edges by using the linkage mechanism theory.
该方法利用连杆机构原理自动确定由直线和圆弧组成定位边界的零件的全部候选定位方案。 - This paper analyzes the graphical design of quick return planar linkage mechanisms with an additional planar linkage dimension, which gains practical method for such design.
摘要论述了有附加条件时急回连杆机构的图解设计，为其设计提供了思路。
