Research of Magnetic Flux Leakage Testing Technology for the Outside of Pipeline
YANG Zhi-jun, LIU Yu-zhuo, WU Zhong-yi, LIU Yan-lei, YU Yong-liang
Pressure Vessel Technology . 2018, (3): 56 -62 .  DOI: 10.3969/j.issn.1001-4837.2018.03.010