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In this work , a tunable pre-curing DLP approach was developed where the relationship between the forming layer thickness and ultraviolet ( UV ) exposure time is theoretically analyzed , and the curing process of photo-curable solutions is divided into two sub-processes : pre-curing and further curing .
 DLP, forming, ultraviolet, UV, exposure, curing, photo-curable, curing
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:
 DLP, forming, ultraviolet, UV, exposure, curing, photo-curable, curing