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如圖,彈簧的材料有無要求?如何驗證壽命和承受的重量? |
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點評
卡扣?為什么要用扭簧,型材下面要裝什么?窗簾嗎?
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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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