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To address the shortcomings of previous studies on improving the poor mechanical properties of the resin used in 3D printers , this study presents a technology for fabricating short fibres or a continuous fibre-composite material using stereolithography 3D printing .
 mechanical properties, resin, 3D printers, technology, fabricating, fibres, material, stereolithography 3D printing
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:
 mechanical properties, resin, 3D printers, technology, fabricating, fibres, material, stereolithography 3D printing