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When the materials analyzed in this work are incorporated with other active cooling systems , space-based 3D printed applications can then be designed to incorporate increasing thermal loads , opening a new door to producing space-ready 3D printed structures .
 concept or principle: materials; manufacturing process: cooling; manufacturing process: 3D printed; material: be; manufacturing process: 3D printed
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: materials, cooling, 3D printed, be, 3D printed 
Answer:
 concept or principle: materials; manufacturing process: cooling; manufacturing process: 3D printed; material: be; manufacturing process: 3D printed