2174
Referring to an assembly with fixed connection type , general rules to design fasteners/connectors , in particular snap-fit features , are presented with respect to polymer-based AM processes in , and to metal-based ones in .
 manufacturing process: assembly; engineering feature: design; engineering feature: snap-fit features; manufacturing process: AM processes
Please list all entity words in the text that fit the category.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} 
Answer:
 manufacturing process: assembly; engineering feature: design; engineering feature: snap-fit features; manufacturing process: AM processes