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Finally , the evaluation of advanced area roughness parameters such as surface roughness , skewness and kurtosis according to ISO 25178 allows the ascertainment of subtle differences arising in parts with different positioning on the build platform , possibly due to the inks employed in the MJF process .
 area, parameters, as, roughness, ISO, build platform, MJF
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:
 area, parameters, as, roughness, ISO, build platform, MJF