lower variation是什么意思

用法例句

By designing the negative shift for the sprocket,its trajectory coincides with the theoretical one,and the meshing quality is improved.

通过对链轮的负变位设计,使运动轨迹与理论轨迹重合,提高了啮合质量,并对啮合的重合度作了分析计算,对重合度的选择提供了依据,对提高传动的平稳性具有重要意义。