借鉴结构可靠度分析方法，给出了供水管网抗震功能可靠度分析的一次二阶矩方法。

The mean-value-first-order-second-moment method and advanced first-order-second-moment method are used to analyze the aseismatic serviceability of water supply network.

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结构可靠度分析的核心是计算预定义功能函数的失效概率。

Structural reliability analyses seek to calculate the failure probability of a predefined performance function.

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回路过程控制器是分布控制系统中散度可达到一个回路的智能化仪表。具有可靠性高，功能强，灵活性好等特点。

Circuit process controller is an intelligent instrument witch divergence in distributed control system can reach one loop, with the property of high reliability, rich function and well flexibility.

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