“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	sodium lauryl sulfate collector sodium light sodium line sodium line index sodium loop sodium mercaptoundecahydro-closo-dodecaborate sodium metaaluminate sodium metaarsenite sodium metabismuthate sodium metallurgy sodium metaphosphate sodium metasilicate sodium metasillicate sodium nickel chloride battery sodium/nickel chloride battery sodium nitrate sodium nitrite sodium nutrition sodium nutrition in plant sodium orthophosphate sodium pentachlorophenate sodium perborate sodium perchlorate sodium peroxide sodiumpertechnetate[99mTc]

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