6693
The results indicate that a large offset value increases surface roughness due to an insufficient energy input , while a small offset increases surface roughness due to an intensified Marangoni convection .
 offset, surface roughness, offset, surface roughness
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:
 offset, surface roughness, offset, surface roughness