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On the basis of the characters of HG - II myriametre rail welder and thetechnological request of rail gas pressure welding in the field, a ra. 根據新技術標準和施工工藝特點,在客運專線鋪軌基地建造了全自動的長鋼軌銲接流水生産線,縂結出了長鋼軌閃光接觸銲的施工關鍵技術。