5574| 6
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齒輪、鏈輪工程圖怎生成? |
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點評
完全贊同“工人師_OgIOQ“的說法!很多人老是僵化的抓住書面規定不放,卻不肯根據實際去改進。
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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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