2635
The effects of process parameters upon PBF is studied by applying nine different parameter sets in the aB-printed state and after homogenization and ordering .
 concept or principle: process parameters; manufacturing process: PBF; concept or principle: parameter; manufacturing process: homogenization
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: process parameters, PBF, parameter, homogenization 
Answer:
 concept or principle: process parameters; manufacturing process: PBF; concept or principle: parameter; manufacturing process: homogenization