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當油缸桿外伸時和收縮時, 油缸桿提供的力(推力和拉力)大小是不是一樣? |
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小黑屋|手機版|Archiver|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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