为了验证原来木龙骨天花板是否还能够继续使用，设计人必须检查其承重表面，但也不必要揭开整个天花板的构造层一窥究竟。
In order to check the serviceability of a wood-beam ceiling one will always inspect the bearing surfaces but will not remove the entire ceiling cladding.
本发明适用铝天花板的无龙骨安装。
The invention is applicable to the keel-free installation of the aluminum ceiling.
本发明适用铝天花板的无龙骨安装。
The invention is applicable to the keel-free installation of the aluminum ceiling.
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