4085
A model was used to describe the evolution of porosity due to laser sintering , and then a model of the effects of porosity on the viscoplastic constitutive properties of the sintered material was used in the thermomechanical simulation .
 concept or principle: model; concept or principle: evolution; machanical property: porosity; manufacturing process: laser sintering; concept or principle: model; machanical property: porosity; concept or principle: properties; manufacturing process: sintered; material: material; concept or principle: thermomechanical; enabling technology: simulation
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: model, evolution, porosity, laser sintering, model, porosity, properties, sintered, material, thermomechanical, simulation 
Answer:
 concept or principle: model; concept or principle: evolution; machanical property: porosity; manufacturing process: laser sintering; concept or principle: model; machanical property: porosity; concept or principle: properties; manufacturing process: sintered; material: material; concept or principle: thermomechanical; enabling technology: simulation