生产线作为制造系统设计的重要组成部分，其调度方案的好坏与生产线设备的利用率、产品的生产时间和生产线的效率等密切相关。
The schedule of the product line, which is an important part of the manufacturing system design, is closely related with the efficiency of product line equipment and efficiency of the product line.
第二部分介绍了协同实验室，电力线通信技术，电力线网络单元等相关概念以及国内外最新的研究进展情况。
The second part introduced relevant concept of collaboratory, power line communication technology, and power line network unit, etc. as well as the latest research progress both at home and abroad.
设计了电力线信道特性测量系统，根据测量结果对噪声特性、传输特性和阻抗特性等相关问题进行了分析。
Measurement system of PL channel characteristic is designed, and the characteristic of noise, transmission and impedance are analyzed based on the measuring result.
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