7920
We propose an analytical model for predicting print direction-dependent flows and particle distributions as a function of anisotropy of the particle distribution in the nozzle , a disturbed zone near the nozzle , fluid reshaping of the print bead , uniform rotation of the print bead , calibration of the ink and support nozzle positions , and 3D printer motor error .
 model, print, particle, distributions, as, anisotropy, particle, distribution, nozzle, nozzle, fluid, print, bead, print, bead, calibration, ink, support, nozzle, 3D printer, error
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:
 model, print, particle, distributions, as, anisotropy, particle, distribution, nozzle, nozzle, fluid, print, bead, print, bead, calibration, ink, support, nozzle, 3D printer, error