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轻型钢结构设计与制作实用手册。
Light steel structure design and production of practical manuals.
youdao
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对门式刚架轻型钢结构的组成特点进行了简单介绍。
The character of lightweight steel structure portal frame was introduced.
youdao
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对门式刚架轻型钢结构的组成特点进行了简单介绍。
The character of lightweight steel structure portal frame was introduced.
youdao