遗传算法在路径规划中得到了成功应用，但是已有算法对于不可行路径和置换比例的关注较少。
Traditionally, not-available paths and replacement proportion are deemed to be useless and always discarded directly by almost researchers in this field.
本文还通过在改良土中置换一定比例的砂土来改善土料的颗粒级配，以降低循环失水对水泥土强度的影响。
The authors also try to improve grain composition of soil by replacing cement soil with some sand to reduce influence of environmental change to strength of cement improved soil.
置换率是桩体承担荷载比例大小的主要因素，提高桩体承载比例的主要途径是提高桩的置换率，增大桩帽面积。
The replacement ratio is the main factor for the increase of proportion of pile bearing load, and the main way is to raise the replacement ratio of piles and the size of the pile cap.
在置换地基土才能使水泥掺入量满足设计要求的情况下，上返水泥土的存在改变了水泥掺入量的分配，桩体实际水泥掺入比随水泥土上返量大小及固相中水泥所占比例而改变。
The design of cement ratio is encountered by means of replacing the soil with grout, and the distribution of cement in the pile is changing with the return soil-cement.
在检测到的24个碱基突变中，主要是碱基的置换(87.5%)，碱基缺失的比例比较小(12.5%)。
In all of the 24 bases of mutants, the base replacement occupies about 87.5% of the total mutants with only a small portion of gene deletion (12.5%).
与静脉应用甲基强的松龙相比，血浆置换使发病时伴有肾衰的ANCA相关性系统性血管炎患者肾脏恢复比例增加。
Plasma exchange increased the rate of renal recovery in ANCA-associated systemic vasculitis that presented with renal failure when compared with intravenous methylprednisolone.
与静脉应用甲基强的松龙相比，血浆置换使发病时伴有肾衰的ANCA相关性系统性血管炎患者肾脏恢复比例增加。
Plasma exchange increased the rate of renal recovery in ANCA-associated systemic vasculitis that presented with renal failure when compared with intravenous methylprednisolone.
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