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The microstructure of this material is probed through a combination of electron microscopy to identify the precipitate structure , electron backscatter diffraction to quantify the grain-level features , and synchrotron-based X-ray microcomputed tomography to detect porosity .
 microstructure, material, electron microscopy, precipitate, electron backscatter diffraction, X-ray, porosity
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:
 microstructure, material, electron microscopy, precipitate, electron backscatter diffraction, X-ray, porosity