S690QL 低合金高强钢焊接接头组织特征 和低温韧性研究.Published in:Electric Welding Machine / Dianhanji, 2024, v. 54, n. 5, p. 17, doi. 10.7512/j.issn.1001-2303.2024.05.02By:王艳华;谢 耿;张 斌;沐卫东;蔡 艳Publication type:Article