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Aspects deemed important for future work on the design and structural optimisation in AM , are as follows : Consistency through benchmarking mathematically-driven models and confidence via experimental verification will be important as industries are on the verge of adopting AM as means of production .
 engineering feature: design; concept or principle: structural optimisation; manufacturing process: AM; material: as; concept or principle: Consistency; concept or principle: experimental; material: be; material: as; manufacturing process: AM; manufacturing process: production
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:
 engineering feature: design; concept or principle: structural optimisation; manufacturing process: AM; material: as; concept or principle: Consistency; concept or principle: experimental; material: be; material: as; manufacturing process: AM; manufacturing process: production