7042
Furthermore , heat accumulation caused by multiple scanning increases convection and conduction heat flux resulting in the increase of the width and depth of the molten pool , but no change of dominant role of convective heat flux to the shape of the molten pool .
 heat accumulation, scanning, heat flux, molten pool, heat flux, molten pool
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:
 heat accumulation, scanning, heat flux, molten pool, heat flux, molten pool