4953
Parameters like laser power , spot velocity and thickness of the powder layer are analysed to achieve high density of the parts .
 Parameters, laser power, powder, layer, density
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:
 Parameters, laser power, powder, layer, density