passing step meaning in English

三步直走的前进交换步

It includes concretely : carrying on multistage fuzzy comprehensive appraisal to every overall arrangement scheme that is drafted in step with the fuzzy comprehensive evaluation assessment , confirming the route overall arrangement scheme optimized ; the optimum seeking result of the scheme , directing against the factor influencing line shape of route according to the overall arrangement of the route , forming these factors according to dominance relation orderly level pass steps structure , and using the analytic approach of the level principle , constructing the comparative judgment matrix among the influence factors ; chasing layer calculate and examining to every key element , carrying on level always arranged in an order , confirming the scheme of optimizing
具体包括：用模糊综合评价法对拟定路线的各布局方案同步进行多级模糊综合评判，确定优化的路线布局方案；根据路线布局方案的优选结果，针对影响路线线形的因素，将这些因素按支配关系形成有序的层次递阶结构，并运用层次分析法原理，构造影响因素间的比较判断矩阵；逐层对各要素计算与检验，进行层次总排序，确定优化方案。