592
Hydrodynamic cavitation gradually removed loosely attached surface asperities in AM internal channels .
 concept or principle: cavitation; concept or principle: surface asperities; manufacturing process: AM
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: cavitation, surface asperities, AM 
Answer:
 concept or principle: cavitation; concept or principle: surface asperities; manufacturing process: AM