楼主: liwsi19880202
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求助,10mm后的钢板中间铣掉,留下筋,能增强强度么? |
发表于 2020-5-19 23:13:54
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发表于 2020-5-20 08:37:54
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发表于 2020-5-20 09:56:50
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发表于 2020-5-20 11:40:48
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