... 阿魏酸的制备：preparation of ferulic acid 奥氏体中锰钢：austenitic medium manganese steel 安全管理工程：safety management engineering ...
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The strength, toughness and surface hardness of medium Manganese austenitic steel have been increased greatly by casting surface alloying and complex modification.
通过铸造表面合金化和复合变质处理，使中锰奥氏体钢的强度、韧性和表面硬度显著提高。
The impact toughness, crack forming energy and crack extension energy of complex modified medium manganese austenitic steel. Are increased by 263%? 288% and 232% respectively.
复合变质中锰奥氏体钢的冲击韧度、裂纹形成功和裂纹扩展功分别比原来提高了263%、288%和232%。
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