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一臺機器從無到有的四個層次 |
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點評
相較于發(fā)達國家,你們少了青少年時期腦部大開竅時的玩,許多機械常識是玩出來的,玩過不久便有自制的渴望,自己琢磨造過物之后才能尊重別人的智財
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Archiver|手機版|小黑屋|機械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網(wǎng)安備33038202004372號 )
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