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High-strain-rate deformation in ultrasonic additive manufacturing was analyzed by performing microstructural characterization via electron microscopy .
 concept or principle: deformation; manufacturing process: ultrasonic additive manufacturing; process characterization: microstructural characterization; process characterization: electron microscopy
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 concept or principle: deformation; manufacturing process: ultrasonic additive manufacturing; process characterization: microstructural characterization; process characterization: electron microscopy