Ключевые слова:
Defects, Indentations, Frequency measurement, Dimensional measurement, Protuberances, Type testing, Classification systems, Shape, Destructive testing, Measurement, Chemical composition, Moisture measurement, Ceramics, Refractories, Refractory materials, Unshaped refractories, Ignition-loss tests, Mechanical shock, Ultrasonic testing, Test equipment, Non-destructive testing, Impact testing, Measuring instruments, Definitions, Inspection by variables, Designations, Inspection by attributes, Accuracy