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The wear behavior of the aB-processed parts is compared with that of pure Ti parts also obtained by selective laser melting .
 concept or principle: wear; material: Ti; manufacturing process: selective laser melting
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: wear, Ti, selective laser melting 
Answer:
 concept or principle: wear; material: Ti; manufacturing process: selective laser melting