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厥屁股需要底蘊嗎?厥著能玩互聯網嗎?哈哈, |
點評
要懂大型柴油機,各種變速器,大型螺桿泵或者大的隔膜泵,設計整個管路的‘上山’,‘下山’,‘流不滿’,液壓沖擊,等等問題,還要懂大型管道焊接,檢測,監測,等等
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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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