经过30多年的沉寂,美国的核工业又再次复活了。更,生产新一代的结构件比如压力容器、管道、管板、泵、阀门等都采用了完全不同于以往的制造方式。30年前,大约95%以上的焊接都采用手工或半自动化。尽管以前在产品制造领域,焊接显得为重要 After more than 30 years of silence, the nuclear industry in the United States has risen again. Moreover, the production of a new generation of structural parts such as pressure vessels, pipes, tubesheets, pumps, valves and so on are all completely different from the previous manufacturing method. Thirty years ago, about 95% of the welding was manual or semi-automatic. Although previously in the field of product manufacturing, welding appears to be important