2039
A shape function is applied in to design a pore model and then a subtractive Boolean operation is conducted between the pore and the original solid CAD models to obtain the final scaffold model .
 engineering feature: design; machanical property: pore; concept or principle: model; manufacturing process: subtractive; enabling technology: Boolean operation; machanical property: pore; enabling technology: CAD models; concept or principle: scaffold model
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:
 engineering feature: design; machanical property: pore; concept or principle: model; manufacturing process: subtractive; enabling technology: Boolean operation; machanical property: pore; enabling technology: CAD models; concept or principle: scaffold model