6449
However , in this study , the quantification of the spatter distribution on the powder bed was performed , following their transport by the inert gas flow which was varied at two gas pump settings ( 60 and 67 % ) .
 spatter, distribution, powder bed, transport, inert gas, gas
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:
 spatter, distribution, powder bed, transport, inert gas, gas