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a hollow steel column with an internal diameter of 248 mm has to support an axial load of 200 kn
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内容说明: a hollow steel column with an internal diameter of 248 mm has to support an axial load of 200 kn
文件大小: 7926KB
时长: 13.400 sec
尺寸: 498x280
已创建: 7/1/2020, 2:02:48 PM

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