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The microstructure of DMLB-AlSi10Mg consists of hierarchical characteristics , spanning three order of magnitude , where nanometer sized to sub-millimeter scaled features exist in the structure .
 concept or principle: microstructure; process parameter: magnitude; engineering feature: nanometer; concept or principle: structure
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: microstructure, magnitude, nanometer, structure 
Answer:
 concept or principle: microstructure; process parameter: magnitude; engineering feature: nanometer; concept or principle: structure