“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	mapping of the circle mapping of the interval mapping of the sphere mapping of trees mapping onto mapping onto a point mapping onto a set mapping orbit mapping path-space mapping problem mapping property mapping quantitative trait loci for economic traits in aquatic animals mapping radius mapping-rectifying theorem mapping relation mapping satellite mapping semigroup mapping sentence mapping sink mapping source mapping space mapping table mapping theorem mapping torus mapping trace

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