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In the context of DfAM , research today is geared towards print-ready TO designs bridging challenges of design and fabrication .
 concept or principle: research; engineering feature: designs; concept or principle: bridging; engineering feature: design; manufacturing process: fabrication
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: research; engineering feature: designs; concept or principle: bridging; engineering feature: design; manufacturing process: fabrication