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The statistical average grain size of the SLM-manufactured Cu-15Ni-8Sn alloy was 4.03 μm .
 concept or principle: average; material: alloy
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: average, alloy 
Answer:
 concept or principle: average; material: alloy