8813| 21
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請教大家這處轉動用了什么機構? |
本帖被以下淘專輯推薦:
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點評
拿出千分尺,感覺沒有阻尼
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點評
似乎真如層主所言
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Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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