C50

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3.

Analysis of the local coarse grains of C50 steel axle after heat treatment and the remedies

50 钢车轴热处理局部粗晶分析与对策

wǔ shí gāng chē zhóu rè chǔ lǐ jú bù cū jīng fēn xī yǔ duì cè

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