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Printing performance of the energetic samples was compared with standard 3D printing materials , with metrics including the bead-to-bead adhesion and surface quality of the printed samples .
 concept or principle: Printing performance; concept or principle: samples; concept or principle: standard; manufacturing process: 3D printing; machanical property: adhesion; process parameter: surface quality; concept or principle: samples
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: Printing performance, samples, standard, 3D printing, adhesion, surface quality, samples 
Answer:
 concept or principle: Printing performance; concept or principle: samples; concept or principle: standard; manufacturing process: 3D printing; machanical property: adhesion; process parameter: surface quality; concept or principle: samples