20CrMnTiH齿轮钢轧制过程的金属流变对铸坯碳偏析的影响
20CrMnTiH치륜강알제과정적금속류변대주배탄편석적영향
Effect of Metal Rheology of Gear Steel 20CrMnTiH in Rolling Process on Carbon Segregation of Casting Bloom
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