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由天津焊接研究所承担的机械工业科学技术发展项目之一“粗氩气体保护焊工艺试验研究”,在机械委机械科学研究院的主持下,于2月25日在天津焊接研究所通过了技
Tianjin Welding Research Institute of the commitment to mechanical and industrial science and technology development project “crude argon gas welding process test”, under the auspices of Mechanical Committee of Mechanical Science Institute, on February 25 at the Tianjin Welding Institute passed the technical