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In order to provide a tool to investigate this relation , a semi-analytical thermal model of the SLM process is presented which determines the temperature evolution in a 3D part by way of representing the moving laser spot with a finite number of point heat sources .
 machine or equipment: tool; concept or principle: model; manufacturing process: SLM; concept or principle: process; process parameter: temperature; concept or principle: evolution; application: 3D part; enabling technology: laser; concept or principle: heat sources
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: tool, model, SLM, process, temperature, evolution, 3D part, laser, heat sources 
Answer:
 machine or equipment: tool; concept or principle: model; manufacturing process: SLM; concept or principle: process; process parameter: temperature; concept or principle: evolution; application: 3D part; enabling technology: laser; concept or principle: heat sources