secondary pipe

The source of pipe line secondary stress check condition is the stability condition.

管道二次应力校核条件来源于结构的安定性条件.

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Corrosion scales could form on the pipe wall that serving for long time. Drinking water can suffered from secondary pollution, and hygeian situation directly influences supply water quality.

服务年限长的供水管道内壁会形成腐蚀物，使饮用水受到二次污染，供水管道的卫生状况将直接影响水质。

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The inner stresses of the tubes and pipe arrangement stresses are the secondary cause, which accelerated the explosion procedure.

管子内压应力与管系应力加速了爆漏过程，是造成过热器管撕裂爆口的次要原因。

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After the analysis of the factors affecting the secondary air flow, neural network PID control with a predictive model is designed, reducing the interference on the secondary air flow from pipe coupling and total air volume.

在分析了影响二次风流量的因素之后，设计了带有预测模型的神经网络PID控制，减小了管道耦合和总风量对流量控制的影响。

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A considerable part of the money supply facilities for a long time without maintenance, management, secondary water supply facilities and frequent overflow pipe leakage; while water pollution is very serious.

有相当一部分供水设施长时间无资金维护、管理，使二次供水设施时常发生溢流和管网漏失；同时水质污染也十分严重。

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