TIS 244 8-9-1979 Standard methods of test for iron and steel part Ⅷ charpy impact test (u-notch) for steel part Ⅸ izod impact test for steel《铁和钢的标准试验方法 第8部分 钢的夏比冲击试验(U形切口) 第9部分 钢的埃.pdf

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