5985
The evolution in powder properties was used to explain observed performance differences obtained by the Hausner ratio and a Revolution Powder Analyzer for quantifying flowability .
 evolution, powder, performance, Powder
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:
 evolution, powder, performance, Powder