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In this work , samples fabricated at different locations , orientations , and distances from the build platform have been characterized , studying the relationship of these variables with the resulting material intrinsic characteristics and properties ( surface topography , microstructure , porosity , micro-hardness and static mechanical properties ) .
 concept or principle: samples fabricated; concept or principle: orientations; machine or equipment: build platform; material: material; concept or principle: properties; concept or principle: surface topography; concept or principle: microstructure; machanical property: porosity; concept or principle: mechanical properties
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: samples fabricated, orientations, build platform, material, properties, surface topography, microstructure, porosity, mechanical properties 
Answer:
 concept or principle: samples fabricated; concept or principle: orientations; machine or equipment: build platform; material: material; concept or principle: properties; concept or principle: surface topography; concept or principle: microstructure; machanical property: porosity; concept or principle: mechanical properties