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The oxidation layer on the EB-PBF-fabricated alloy was more stable , preventing further oxidation and improving oxidation resistance .
 manufacturing process: oxidation; process parameter: layer; material: alloy; manufacturing process: oxidation; machanical property: oxidation resistance
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: oxidation, layer, alloy, oxidation, oxidation resistance 
Answer:
 manufacturing process: oxidation; process parameter: layer; material: alloy; manufacturing process: oxidation; machanical property: oxidation resistance