A Review of the Current Research Status and Intelligent Development of Small-Diameter Natural Gas Pipeline Inspection Robots. Academic Journal of Emerging Technologies, [S. l.], v. 2, n. 3, p. 53–62, 2026. DOI: 10.63313/AJET.9046. Disponível em: https://academics.erytis.com/index.php/AJET/article/view/456. Acesso em: 9 may. 2026.