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求圓管與其展開圖上的對應(yīng)結(jié)構(gòu)的精確畫法? |
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點(diǎn)評
這活就是普工干滴,用鉗工的成本都高,更不能用“大工匠”。
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點(diǎn)評
不僅僅是麻煩事,應(yīng)該是沒法看了吧!
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