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These are all designed with the same total density , but the different designs result in different minimum feature thickness and pore sizes .
 engineering feature: designed; machanical property: density; engineering feature: designs; engineering feature: minimum feature thickness; process parameter: pore sizes
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: designed; machanical property: density; engineering feature: designs; engineering feature: minimum feature thickness; process parameter: pore sizes