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This paper presents an integrated physicB-based and statistical modeling approach to predict temperature field and meltpool geometry in multi-track processing of laser powder bed fusion ( L-PBF ) of nickel 625 alloy .
 modeling, temperature, meltpool, geometry, laser powder bed fusion, L-PBF, nickel, alloy
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:
 modeling, temperature, meltpool, geometry, laser powder bed fusion, L-PBF, nickel, alloy