“welding qualification and certification”的概念、定义、翻译、参考文献-科学参考

单词	welding qualification and certification
释义	welding qualification and certification Encyclopedia 工学金属焊接释 welding qualification and certification焊接资格认证按照从事焊接行业所必需的技能标准或任职资格条件，通过政府或国际认可的考核机构对劳动者的技能水平进行评价和鉴定，并对合格者授予焊接技术资格证书的活动。
随便看	infected infection infection cycle infection imaging agent infection immunity infection model infection phase infection process infection rate infections after haematopoietic cell transplantation infection thread infectionwith abalone herpes-like virus，AbHV infection with Leucothrix mucor infection with Salmonid alphavirus infectiosity infectious atypical pneumonia infectious bovine rhinotracheitis infectious bovine rhinotracheitis virus，IBRV infectious bronchitis infectious bursal disease infectious bursal disease virus, IBDV infectious canine hepatitis virus，ICHV infectious canine hepatitis，ICH infectious coryza infectious disease

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