“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	average departure average development speed average deviation average dispersion average distance average distortion average drift velocity of Brownian particle average driving mileage of tire average elevation plany average error average error 9 mean error average extra depth average extra width average function average functionality average grade of mine district average household size average house price index average income of migrant workers in rural areas average information average inventory average ionization energy loss average land rent average land use for residence per household average laser power

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