7170
We found that during the powder re-coating process , fine particles tend to settle within a short distance from the re-coater starting position , accompanied by higher variability of local powder size distribution .
 powder, process, particles, variability, powder, distribution
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:
 powder, process, particles, variability, powder, distribution