7619
In the process , a thin layer of liquid photosensitive resin is constrained between a constrained surface and the platform or part .
 process, layer, photosensitive resin, surface, platform
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, layer, photosensitive resin, surface, platform