“焊接资格认证”的概念、定义、翻译、参考文献-科学参考

单词	焊接资格认证
释义	焊接资格认证 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	background radiation background radiation intensity background radio radiation background rejection background source background source function background star background subtraction Background survey background temperature background value of elements in soil background value of soil elements background value of soil environment background wave background wood backgroung risk back hall of Er xian temple in Xixi, Lingchuan backhoe loader backhoe single bucket hydraulic excavator back-illuminated image sensor backing backing layer materials of patches backing-off backing store backlash

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。