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› ASTM E186-20 Standard Reference Radiographs for Heavy-Walled (2 to 4 1⁄2 in. (50.8 to 114 mm)) Steel Castings1
skywolf03
发表于 2020-12-12 21:38:44
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ASTM E186-20 Standard Reference Radiographs for Heavy-Walled (2 to 4 1⁄2 in. (50.8 to 114 mm)) Steel Castings1