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Together with the advancement in hardware technology , capable of fine- and multi-scale structures , these new lightweight lattice structures with locally changing material properties represent a unique offering of AM .
 concept or principle: technology; engineering feature: multi-scale structures; concept or principle: lightweight lattice; concept or principle: material properties; manufacturing process: AM
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: technology; engineering feature: multi-scale structures; concept or principle: lightweight lattice; concept or principle: material properties; manufacturing process: AM