8948
The porosity features can be conveniently controlled in 2D space according to the actual computed tomography images .
 machanical property: porosity; material: be; concept or principle: 2D; process characterization: computed tomography
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: porosity, be, 2D, computed tomography 
Answer:
 machanical property: porosity; material: be; concept or principle: 2D; process characterization: computed tomography