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· PDF fileRa 12.5 Ra 3.2 11 Ra 1.6 / 0.05 A 14Js9 Ra32 18 Ra 3.2 Ra32 11 Ra3.2 2.5 83 150 214.82 5.63 80.63-OŒ JIS B 1702 1 a 21 134.59 201.86 Ra 3.2 // 0.01 B

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