合力是个力学概念，是指作用在同一刚体或质点上几个力，如果可以用一个力等效地代替，这个力就是原来几个力的合力。思想政治工作中不同角度、不同层次、不同形态的力形成合力，既是我党行之有效的优良传统，而且也是我们的政治优势。 对合力的思考，一般都从力的源头──各级 Cohesion is a concept of mechanics, refers to the role of the same rigid body or particle a few forces, if you can use a force equivalent to replace, this force is the original force of several forces. The formation of a concerted effort of ideological and political work from different angles, different levels and different forms is not only an effective fine tradition of our party, but also our political superiority. Thinking about cohesion is generally based on the source of force - at all levels