发布时间:2025-01-20 11:57:37
防火阀安装在管道上,平时开启,超温后自动熔断关闭,防止火灾蔓延,用单输入模块。
防火风口平时关闭,火灾时开启,进行排烟或送风,超温自动熔断关闭,用单输入输出模块。
一个圆柱形水池水池内壁和底面都要镶上瓷砖水池底面半径2米池深15米镶瓷砖的面积是多少平方米
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