发布时间:2025-02-02 19:00:20
条形基础编号在平法中分为基础梁和条形基础底板编号。则条形基础基础梁,有地圈梁,构造柱生根于基础梁(JL)或地圈梁(DQL)都可以,以设计图纸为准。
在三相四线制中零线也做接地线而且是必须的如果零线断了用电器外壳都带电那为什么要接地呢
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