W18Cr4V针阀表面点状缺陷分析
何开文,张全新
Analysis of point-like defect on surface of W18Cr4V needle valve
HE Kai-wen,ZHANG Quan-xin
中国钢铁期刊网 . 2016, (1): 25 -28 .  DOI: 10.13228/j.boyuan.issn1001-0777.20150107