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The focus of this study is on an additional , unique spatter morphology consisting of larger , spherical particles with surface oxide spots exhibiting a wide distribution of surface configurations , including organized patterning .
 spatter, morphology, spherical particles, surface, oxide, distribution, surface
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:
 spatter, morphology, spherical particles, surface, oxide, distribution, surface