2906| 9
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我這個(gè)彎管安全不? |
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點(diǎn)評(píng)
因?yàn)槲夜潭◣缀误w這個(gè)條件設(shè)置的不好,是簡(jiǎn)化的~~~給出的圖解也是不準(zhǔn)確的
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點(diǎn)評(píng)
不應(yīng)該僅僅考慮屈服點(diǎn)啊,還得綜合許用應(yīng)力啊
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