2863
This is due to the presence of an elongational flow as molten material transitions from the melting region ( diameter of 3 mm ) to the nozzle at the exit ( diameter of 0.5 mm ) .
 as, material, melting, diameter, mm, nozzle, diameter, mm
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:
 as, material, melting, diameter, mm, nozzle, diameter, mm