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Indoor water supply pipeline fire hydrant system has two forms: branched network and ranged network.
室内消火栓系统给水管道有枝状管网和环状管网两种形式。
youdao
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Indoor water supply pipeline fire hydrant system has two forms: branched network and ranged network.
室内消火栓系统给水管道有枝状管网和环状管网两种形式。
youdao