Refer to the ductibility and light-weight which improved the construction more safe reliability.
钢结构延性好，自重轻、大大提高了住宅的安全可靠性。
Refer to the ductibility and light-weight which improved the construction more safe reliability.
钢结构延性好，自重轻、大大提高了住宅的安全可靠性。
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