For the large truss structure, this paper derived a structure optimization method.
针对大规模桁架结构，推导出一种结构优化设计方法。
Soft oak derived tannins provide structure and a hint of vanilla to the finish.
柔软的橡木桶味源自极好的单宁结构。带着香草的回味。
Soft oak derived tannins provide structure and a hint of vanilla to the finish.
柔软的橡木桶味源自极好的单宁结构。带着香草的回味。
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