Ключевые слова:
Visual inspection (testing)|Radiographic testing|Thickness|Welded joints|Classification systems|Fusion welding|Non-destructive testing|Aircraft components|Flaw detection|Symbols|Resistance welding|Aluminium alloys|Ultrasonic testing|Nickel alloys|Magnesium alloys|Steels|Defects|Titanium|Titanium alloys|Copper alloys|Welding|Air transport engineering