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The oxygen inhibition layer was successfully maintained by the molecular oxygen permeated through the composite release film , achieving rapid stereolithography , and key factors that affecting resin refilling are selectively studied by the orthogonal experiment .
 oxygen, layer, oxygen, composite, stereolithography, resin, experiment
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:
 oxygen, layer, oxygen, composite, stereolithography, resin, experiment