缩率

来源：叨叨游戏网

Cylinder=1250r-bak=3π=3.1416thickness=3.942πR=12506.2832R=1250R=198.9432136R1=R + (r-bak)=201.94321362πR1=1268.84962πR2=1293.605408distortion %=1.951043528滚筒周长衬垫板厚

98.046

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