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(接上期)4从初露端倪到尽显锋芒——谈药芯焊丝的飞跃发展4.1中国药芯焊丝行业发展概况4.1.1中国药芯焊丝从无到有,总产量跃居世界第一中国药芯焊丝的研制始于20世纪60年代中期,但很长时间停留在试验摸索阶段,没有实现工业化生
(Continued) 4 from the beginning to the end of the show edge - on the rapid development of the flux cored wire 4.1 Overview of the development of China’s flux cored wire industry 4.1.1 China Cored Wire from scratch, the total output ranked first in the world China The development of flux cored wire began in the mid-1960s, but for a long time stayed in the experimental phase of exploration and did not achieve industrialization