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征文对象:(1)企业从事焊接与切割及相关工作的专业技术人员。(2)科研院所及高等院校从事焊接与切割及相关工作的专业技术人员。征文主题:
Essay objects: (1) enterprises engaged in welding and cutting and related professional and technical personnel. (2) Scientific research institutes and institutions of higher learning engaged in welding and cutting and related professional and technical personnel. Essay topic: