焊缝缺陷有多种，其中_________对焊缝受力的危害最大。 -题库考试答案搜索网

焊缝缺陷有多种，其中_________对焊缝受力的危害最大。

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2021-12-26 19:12

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标签：钢结构设计原理机械工程

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