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This article addresses the effect of variable throughout layer thickness configuration in the binder-jet additive manufacturing of titanium structures for orthopedic applications .
 process parameter: layer thickness; concept or principle: configuration; manufacturing process: additive manufacturing; material: titanium
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: layer thickness, configuration, additive manufacturing, titanium 
Answer:
 process parameter: layer thickness; concept or principle: configuration; manufacturing process: additive manufacturing; material: titanium