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Manufacturing and mechanical characterization of 3D printed tensile test bars and complex porous gyroid specimens .
 manufacturing process: Manufacturing; application: mechanical; manufacturing process: 3D printed; machanical property: porous
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: Manufacturing, mechanical, 3D printed, porous 
Answer:
 manufacturing process: Manufacturing; application: mechanical; manufacturing process: 3D printed; machanical property: porous