2041
The HIP process closes pores and improves the microstructure , but it is important to realize that not all pores are necessarily closed by HIP : it has been shown that pores connected to the surface do not close properly , and is detectable by microCT .
 manufacturing process: HIP; machanical property: pores; concept or principle: microstructure; machanical property: pores; manufacturing process: HIP; machanical property: pores; concept or principle: surface; process characterization: microCT
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: HIP; machanical property: pores; concept or principle: microstructure; machanical property: pores; manufacturing process: HIP; machanical property: pores; concept or principle: surface; process characterization: microCT