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Results of 40 simulation cases with various input parameters such as scanning pattern and speed , laser power , surrounding temperature , and layer thickness were used to train and test the neutral network .
 simulation, parameters, as, pattern, laser power, temperature, layer thickness
Please list all entity words in the text that fit the category. Output format is "word1, 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} 
Answer:
 simulation, parameters, as, pattern, laser power, temperature, layer thickness