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This paper highlights the development process of Antenna Feed Array ( AFA ) using DMLS as an Additive Manufacturing ( AM ) technique .
 concept or principle: process; process parameter: Feed; manufacturing process: DMLS; material: as; manufacturing process: Additive Manufacturing; manufacturing process: AM
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: process, Feed, DMLS, as, Additive Manufacturing, AM 
Answer:
 concept or principle: process; process parameter: Feed; manufacturing process: DMLS; material: as; manufacturing process: Additive Manufacturing; manufacturing process: AM