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Magnetically isotropic bonded magnets with a high loading fraction of 70 vol. % Nd-Fe-B are fabricated via an extrusion-based additive manufacturing , or 3D printing system that enables rapid production of large parts .
 machanical property: isotropic; application: magnets; concept or principle: fraction; concept or principle: fabricated; manufacturing process: additive manufacturing; manufacturing process: 3D printing; manufacturing process: production
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: isotropic, magnets, fraction, fabricated, additive manufacturing, 3D printing, production 
Answer:
 machanical property: isotropic; application: magnets; concept or principle: fraction; concept or principle: fabricated; manufacturing process: additive manufacturing; manufacturing process: 3D printing; manufacturing process: production