“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	infrared photo-dissociation spectroscopy infrared photoelectric system infrared photoelectric system performance infrared photography infrared photometer Infrared Photometer/Spectrometer infrared photometry infrared physics infrared point source homing guidance infrared polarimetry infrared polarization imaging infrared polarizer infrared pre-drying infrared prism infrared quenching infrared radiating coating infrared radiation infrared radiation characteristics infra-red radiation characteristics metrological technique infrared radiation from a planetary debris disks infrared radiation heating and drying infrared radiation measuring instrument infrared radiation of AGN infrared radiation of galaxies infrared radiation of H II region

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