摩擦约束 meaning in English

friction restraint

In motion with a fixed frictionless constraint, no work is done by the constraint .
在固定的无摩擦约束运动中，约束力不作功。
Abstract : in this paper , the proving of the generalized variational function ， of elastic and plastic contact problem is simplified by use of the vector analysis method
文摘:用拉格朗日乘子法，利用向量分析的工具及巧妙的变换，对带摩擦约束的弹塑性接触问题的变分不等原理进行了严格的证明。