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Although AM machines are highly integrated and automatic , before enabling the building process for a machine , there are also some preparation tasks that should be done after receiving a design model and its related production requirements .
 machine or equipment: AM machines; process characterization: building process; machine or equipment: machine; material: be; engineering feature: design; manufacturing process: production
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:
 machine or equipment: AM machines; process characterization: building process; machine or equipment: machine; material: be; engineering feature: design; manufacturing process: production