
NON-DESTRUCTIVE TESTING OF WELDS - PENETRANT TESTING - ACCEPTANCE LEVELS (ISO 23277:2015)
出版:Comite Europeen de Normalisation

專家解讀視頻
NON-DESTRUCTIVE TESTING OF WELDS - PENETRANT TESTING - ACCEPTANCE LEVELS (ISO 23277:2015)
出版:Comite Europeen de Normalisation
專家解讀視頻