求翻译：为适应多品种、小批量的市场需求特点，单元制造技术应运而生。本文针对单元制造实施过程中最关键的单元构建问题，在零件多工艺路线的基础上，以单元间及单元内物流量总和最小为目标，利用数学规划法建立单元构建的数学模型；然后采用遗传算法求解，并根据单元构建问题的特殊性，修改了基本遗传算法的编码方式及遗传操作算子；最后从生产实际出发，结合算例证明了结果的可行性，从而验证了算法的有效性。是什么意思？

In order to meet the multi-species, small quantities of market demand characteristics, cell technology emerged. Manufacture of the most critical unit build in the implementation process for the unit, parts of multi-process route based on the unit and minimize the sum of the amount of logistics unit,

In order to adapt to many different species and small-volume characteristics of the market demand, cell manufacturing technology has emerged. This document elements are made in the process of implementing the most critical cell build, in part based on the route, in order to inter-cell and cell prope

In order to meet the market demand characteristics of multi-species, small batch, cellular manufacturing technology came into being. This for unit manufacturing implementation process in the most key of unit construction problem, in parts more technolog