从分析国内外电弧焊技术的现状，进而推测后20年的发展趋势，认为2 0年后我国将达到目前工业发达国家的水平。
By analyzing the present situation of arc welding technology, the developing trend in next 20 years is furthermore presumed that it is possible to catch up with the developed countries.
从分析国内外电弧焊技术的现状，进而推测后20年的发展趋势，认为2 0年后我国将达到目前工业发达国家的水平。
By analyzing the present situation of arc welding technology, the developing trend in next 20 years is furthermore presumed that it is possible to catch up with the developed countries.
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