governing equations短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 控制方程 In this paper, By a continuous contact model, the numerical solution of the governing equations of planar four— bar linkage with multiple clearances at turning pairs is obtained for the first time. 本文首次给出了在连续接触模型下获得的具有四个运动副间隙的平面四杆机构的运动方程数值解。 cnki