7546| 35
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3D打印都還沒搞懂,4D就已經(jīng)來了 |
評分
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點(diǎn)評
可以是復(fù)合材料(該材料做骨架),應(yīng)用就廣了,。
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點(diǎn)評
我國的革命早已啟動,,革老百姓的命,!
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