7799
While this enables reactive material printing using a printing-then-mixing approach , the resulting excess fluid may compromise the printing quality and accuracy .
 reactive material, fluid, quality, accuracy
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:
 reactive material, fluid, quality, accuracy