2605
Under the assumptions of an isothermal Newtonian fluid and a creeping laminar flow , the deposition flow is controlled by two parameters : the gap distance between the extrusion nozzle and the substrate , and the velocity ratio of the substrate to the average velocity of the flow inside the nozzle .
 isothermal, fluid, deposition, parameters, extrusion, substrate, substrate, average, nozzle
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:
 isothermal, fluid, deposition, parameters, extrusion, substrate, substrate, average, nozzle