9203
The results have shown that layer thickness , number of contours , raster angle and build orientation have a major effect on the creep rate of the parts .
 layer thickness, contours, build orientation, creep
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:
 layer thickness, contours, build orientation, creep