A situation or condition that represents a potential danger to health as the result of exposure to ionizing radiation.
Shrinkage cavity (on radiograph), английский A small bubble in metal that appears as a dendritic, filamentary, or jagged darkened area on a radiograph film. shrinkage cracks
Dual search unit (ut), английский A single search unit containing two transducer elements; one used as a transmitter of ultrasonic energy, the other used as a receiver of ultrasonic energy.
