“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	non-autonomous system of differential equations nonautonomous system of differential equations non-averaging sequence non-axisymmetrical configuration non-axisymmetrical distribution non-axisymmetric disk non-axisymmetric spinning non-balanced development non-baryonic dark matter non-baryonic matter nonbasic nonbasic cell nonbasic variable non-basis non-Bayesian approach non-Benzodiazepines nonbilayer lipid non-biodegradable biomedical metal material nonblocking cache non-blocking memory access non bonded interactions non-bonded interactions nonbonded interactions nonbonding electron non bonding interaction

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