1088
It is comprised of : 1 ) density thresholding and mesh refinement ; 2 ) skeletonisation ; 3 ) identify small features and increase their elemental density ; 4 ) density filtering ; 5 ) density thresholding while preserving volume fraction ; 6 ) create STL file utilizing ; 7 ) boundary interpretation using spline fitting ; 8 ) obtain IGES file from an in-build MATLAB function .
 machanical property: density; concept or principle: mesh refinement; enabling technology: skeletonisation; machanical property: density; machanical property: density; machanical property: density; process parameter: volume fraction; manufacturing standard: STL; manufacturing standard: file; concept or principle: boundary interpretation; enabling technology: spline fitting; manufacturing standard: IGES file
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:
 machanical property: density; concept or principle: mesh refinement; enabling technology: skeletonisation; machanical property: density; machanical property: density; machanical property: density; process parameter: volume fraction; manufacturing standard: STL; manufacturing standard: file; concept or principle: boundary interpretation; enabling technology: spline fitting; manufacturing standard: IGES file