随机方向 meaning in Chinese

random direction

On the basis of analysis of design criterion of shaft washer and housing washer of tandem composite type cylindrical roller thrust bearing , we present a mathematic model for optimal design in accordance with line contact requirement for cylindrical roller and race , design the washers thickness and thickness variation angle by the search algorithm of constrained stochastic direction
摘要在分析串联组合型推力圆柱滚子轴承轴圈和座圈设计准则的基础上，按滚子与滚道线接触要求建立其最优化设计数学模型，采用机械优化设计中的约束随机方向搜索法计算轴圈和座圈的厚度、厚度变化角。