求翻译：由于社会需要的多样性，生产不同产品工厂的模式必然存在着差异，这就给工厂布置设计带来了难题。系统布置设计方法提供了一种以作业单位物流与非物流的相互关系分析为放开主线的规划设计方法，采用一套表达力极强的图例符号和简明表格，通过一套条理清晰的设计程序工厂布置设计。它不是一种严密的设计理论，而是一套实践性非常强的设计模式和规范的设计程序，并且为设施设计人员与生产管理人员广泛采用，效果良好。是什么意思？

Because of the diversity of social needs, producing different products factory mode there must be differences, which have brought challenges to plant layout design. System provides an operation unit layout design method for analysis of non-mutual relationship between logistics and logistics for release planning and design method of main line, using a legend symbol to express strong and concise form, by a clear set of plant layout design program design. It is not a strict design theory, but a very strong practical design pattern and specification design program, design and production management personnel and facilities used to good effect.