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The methodology has been validated by manufacturing parts of revolution on a multi-axis additive manufacturing device using a coaxial PLA deposition system .
 concept or principle: methodology; manufacturing process: manufacturing; manufacturing process: additive manufacturing; material: PLA; concept or principle: deposition
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: methodology; manufacturing process: manufacturing; manufacturing process: additive manufacturing; material: PLA; concept or principle: deposition