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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 .
 process parameter: layer thickness; engineering feature: contours; process parameter: build orientation; machanical property: creep
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: 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} 
 Entities: layer thickness, contours, build orientation, creep 
Answer:
 process parameter: layer thickness; engineering feature: contours; process parameter: build orientation; machanical property: creep