5947| 16
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做了幾個滾珠絲杠輔助支撐大家評價一下 |
點評
國內八十年代的論文上就有這結構了。
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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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