Analysis of linear trace defect on the outside surface of 20# steel pipe sleeve parts
LÜ Fang, HUANG Kaihua, HAO Yongjin, YU Lei, LI Yuejie, MA Ding
Physics Examination and Testing . 2025, (1): 51 -56 .  DOI: 10.13228/j.boyuan.issn1001-0777.20240014