1580
Any complex geometry is feasible in additive manufacturing , the topological optimisation implementation of a model leads to a new internal structure while maintaining conditions ( mechanical , design shape , functions , etc ) .
 concept or principle: complex geometry; manufacturing process: additive manufacturing; engineering feature: topological optimisation; concept or principle: model; machanical property: internal structure; application: mechanical; engineering feature: design
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: complex geometry; manufacturing process: additive manufacturing; engineering feature: topological optimisation; concept or principle: model; machanical property: internal structure; application: mechanical; engineering feature: design