The basic characteristics of optical cable network pipe system are introduced and the problems needing attention for building and application of network pipe system are proposed.
介绍了光缆网网管系统的基本特点，提出了建设和使用网管系统的注意问题。
The article summarizes main points of electronic identification system designing in gas pipe network by introducing constitutes, working principle, and characteristics.
文章通过电子标识系统的组成、工作原理、特征介绍，总结了电子标识系统在燃气管网设计上的要点。
A predictive correction model for thermal characteristics of heat-pipe evacuated tubular solar collector was established based on BP neural network.
基于BP神经网络建立了热管式真空管集热器热性能的预测校正模型。
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