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0 ＩｎｔｒｏｄｕｃｔｉｏｎＡｔｐｒｅｓｅｎｔ,ｗｉｔｈｔｈｅｄｅｖｅｌｏｐｍｅｎｔｏｆｍｉｃｒｏｃｏｍｐｕｔｅｒｃｏｎｔｒｏｌｔｅｃｈｎｉｑｕｅａｎｄｗｅｌｄｉｎｇｔｅｃｈｎｉｑｕｅ,ｓｏｍｅｎｅｗｐａｔｔｅｒｎｓｏｆｗｅｌｄｉｎｇｍａｃｈｉｎｅｓｃｏｎｔ
0 Introduction At present, with the development of computer control technology and welding technology, some new patterns of welding operations