直径0.7cm的螺丝杆,总长50cm。截成一根18CM,8根4cm。需螺母和垫片共:1*4+2*4+6*2=24,后备6个,共30个螺母和垫片。
三孔或一槽的钢条:共8根,长度7cm及以上。孔0.8cm及以上

研究法兰,重新绘图,可以法兰和钢条混合使用

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