发布时间:2025-02-03 22:55:42
楼梯灯光怎么选择安装位置
1.斜45°向外出光
2.斜45°向外里光
3.垂直向下出光
为什么北半球房屋夏季朝北的窗户早晚进入的阳光多朝南窗正午进入的阳光少夏季相反
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