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Ryan combined the multi-stage AM technology with the powder metallurgy process to produce porous Ti alloy scaffolds using wax templates generated by CAD .
 manufacturing process: AM technology; manufacturing process: powder metallurgy; engineering feature: porous Ti alloy scaffolds; material: wax; enabling technology: CAD
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: AM technology; manufacturing process: powder metallurgy; engineering feature: porous Ti alloy scaffolds; material: wax; enabling technology: CAD