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Experimental results demonstrate that powder defects can be efficiently inspected and the results used as feedback information in a build process .
 concept or principle: Experimental; material: powder; concept or principle: defects; material: be; material: as; process parameter: build
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: Experimental, powder, defects, be, as, build 
Answer:
 concept or principle: Experimental; material: powder; concept or principle: defects; material: be; material: as; process parameter: build