高速列车转向架轴箱铸件的生产试验——-40℃超低温高韧性球墨铸铁件的生产技术
고속열차전향가축상주건적생산시험——-40℃초저온고인성구묵주철건적생산기술
Productive Experiment of High Speed Train Bogie Axial Box Casting——Productive technique of -40℃ super-low temperature high toughness ductile iron casting
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