variable interval meaning in Chinese

不定间隔
不定时

Variable interval reinforcement
变动间隔强化
Based on the idea of generating the initial points through one dimension chaos mapping , and then taking them as the initial values by mapping them to the variable interval , a new method based on chaos mapping newton iterative to seek the solutions of nonlinear equations is proposed
摘要运用一维混沌映射产生初始点，再映射到变量区间，为牛顿迭代初值进行求解非线性方程组，提出了基于混沌映射的牛顿迭代法求解非线性方程组的新方法。