welder qualification
短语词组
- welder performance qualification 焊工操作资格;焊工考试
- welder operation qualification test 焊工上岗资格认定
- Welder performance qualification test 焊工技术鉴定试验
- Code for welder technical qualification 焊工技术考核规程
- welder qualification test 焊工考试;焊工测验;焊工资格考试;焊工资格考核
- check of welder qualification 焊工评定的检查
- welder qualification certification 焊工合格证
- base metal for welder qualification 焊工评定用母材
- base metals for welder qualification 焊工评定用母材 返回 welder qualification