If SPDs are to be installed at more than one location in a building, what issues must be considered in coordinating the SPDs at building entrance and others connected to the same line?
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释义
如果在一幢大厦里不只一处安装SPD,大厦入口处的SPD和其他连接在同一条线上的SPD进行协调配合时,必须考虑什么因素?
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