2661
It focuses on the approximation of the behavior in the process zone and the behavior of the solid material , particularly in the context of changing microstructure .
 process, material, microstructure
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:
 process, material, microstructure