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槽钢哪一面受力大啊?---[请教] |
Re: 槽钢哪一面受力大啊?---[请教]
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Re: 槽钢哪一面受力大啊?---[请教]
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Re: 槽钢哪一面受力大啊?---[请教]
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Re: 槽钢哪一面受力大啊?---[请教]
点评
Ix=BH3/12-bh3/12,侧着放受力更好,承重是横放的几倍
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