8783| 13
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板厚越厚,,屈服強(qiáng)度越小,? |
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點(diǎn)評(píng)
當(dāng)然有關(guān)系,見(jiàn)四樓回復(fù)
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點(diǎn)評(píng)
你沒(méi)有回答樓主的問(wèn)題
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多層薄板結(jié)構(gòu)
評(píng)分
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