per step meaning in English

每步长

In chapter 3 , we give an equivalent form of semi - infinite programming , and a locally convergent ssle method is proposed for sip . we only need solve a linear system equations and a subproblem with a parameter per step , also a modified algorithm which saves cost of computations is given , at the end of the paper , we give a proof of the convergence for the algorithms
第三章通过适当的变形，得到半无限规划问题的一个等价形式，并给出一个局部收敛的序列线性方程组算法，这个算法在每一步，只需求解一个线性方程组和一个带参数的非线性子问题，证明了算法的收敛性，同时，给出了一个修正算法，与前面算法相比较，修正算法节约一定的计算量，同样具有较好的收敛性。