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Results indicate strong dependence of build-direction thermal conductivity on raster speed , layer thickness and infill percentage , which is corroborated by high speed imaging of the printing process at different values of these process parameters .
 machanical property: thermal conductivity; process parameter: layer thickness; process parameter: infill percentage; application: imaging; manufacturing process: printing process; concept or principle: process parameters
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: thermal conductivity, layer thickness, infill percentage, imaging, printing process, process parameters 
Answer:
 machanical property: thermal conductivity; process parameter: layer thickness; process parameter: infill percentage; application: imaging; manufacturing process: printing process; concept or principle: process parameters