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The surface roughness is dependent on the building and scanning strategy , material properties , powder size , layer thickness , etc .
 machanical property: surface roughness; concept or principle: scanning strategy; concept or principle: material properties; material: powder; process parameter: layer thickness
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:
 machanical property: surface roughness; concept or principle: scanning strategy; concept or principle: material properties; material: powder; process parameter: layer thickness