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In this paper , the formation and evolution mechanisms of internal defects in Mo are systematically studied , based on the state-of-the-art high-resolution computed tomography .
 concept or principle: evolution; concept or principle: defects; material: Mo; concept or principle: state-of-the-art; process parameter: high-resolution; process characterization: computed tomography
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: evolution; concept or principle: defects; material: Mo; concept or principle: state-of-the-art; process parameter: high-resolution; process characterization: computed tomography