论坛 › 〖国外标准〗 › ASTM A 561-71 Standard Practice for Macroetch Testing of Tool Steel Bars1

Steven 发表于 2007-7-5 12:38:40

ASTM A 561-71 Standard Practice for Macroetch Testing of Tool Steel Bars1

一份ASTM标准,工具钢棒的宏观刻蚀试验(英文)

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