常見例句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焊接流水生產線,總結出了長鋼軌閃光接觸焊的施工關鍵技術。 返回 myriametre