CB337091强功件助板s15w图4131:注:,=:a=2h,加强筋按31U3设置:4防顿肘板按3101设置。防骨h:助板FS图5D3105注:a=bh.d100,c=2h1,当h,100时、c=1.5h,且20U,t1t。3
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