8179
Low-cost FFF machines have a resolution limit set by the nozzle width , which is inferior to the resolutions obtained with expensive stereolithography or selective laser sintering AM systems .
 FFF, resolution, limit, nozzle, stereolithography, selective laser sintering, AM
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:
 FFF, resolution, limit, nozzle, stereolithography, selective laser sintering, AM