做 没适应 也担心会做错 所以慢点 开始也觉得做正常joists可能会更快
timber engineered floor joists easi-joist new separating timber
framing elements: -roof trusses/rafters; floor joists and bemss
timber engineered floor joists easi-joist new separating timber
ca | engineered wood | projects | structures | residence
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