feasible solution set

• 可行域

feasible solution set的用法和样例：

例句

1. Furthermore, the model will keep iterating within the feasible region whenever the iterative point is feasible, and become feasible decreasing directions method.
   进一步地，一旦迭代点进入可行域，模型就能保持在可行域内迭代，成为可行下降类算法。