发布时间:2025-02-05 10:41:46
一般可以用天沟总长(mm)x截面展开(mm)x 厚度(mm)x 7.85 /1000000
天沟重量(T)=天沟总长(mm)x截面展开(mm)x 厚度(mm)x 7.85 /1000000
集成吊顶才安装不到两个月就出现小黑点是什么原因厨房和卫生间吊顶都有
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