原有约束 meaning in English

primal constraint

When step length does not satisfy the restriction condition , the original restriction condition and the optimized scope are kept , and then the step length is minimized to is to enter the second level optimization to get the optimized design plan
当某一步的优化步长不满足约束条件时，保持原有约束条件和最后一步的优化范围，将步长降至15进入第2层优化获得最优设计方案。
After the research of methods of constraint - solving and feature - editing in old system , a new optimozation method of constraint - solving is presented , in which the type of constraint between features is attained and then homotopy is applied in the process of solving
同时对系统原有约束求解进行了研究，并在原有方法基础之上提出了一套新的优化求解算法，即先确定约束问题的类型，然后结合同伦算法进行求解。