... records of, by manufacturers 由制造厂所作的记录 test of qualification 评定试验 Welding 焊接 ...
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Qualification test of welding operators 焊接操作工技能评定 ; 标准焊接操作工技能评定
Qualification test of welders 焊工的认可试验
the test of physician qualification 医师资格考试
Qualification test of brazers 钎焊工能力鉴定试验
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