wood I-joist for building structures的意思|示意
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建筑结构用木工字托梁
wood I-joist for building structures的网络常见释义
建筑结构用木工字梁 ... 建筑结构用木工字梁 wood I-joist for building structures 结构用复合木材 structural composite lumber 木基结构板材 wood-based structural-use panels ...