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Here , we analyzed the structure and corrosion tendency of selective laser melted-additively manufactured ( AM ) 316 L stainless steel ( AM 316L SS ) and its wrought counterpart .
 concept or principle: structure; concept or principle: corrosion; manufacturing process: selective laser; concept or principle: manufactured; manufacturing process: AM; material: stainless steel; manufacturing process: AM; material: SS; concept or principle: wrought
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: structure, corrosion, selective laser, manufactured, AM, stainless steel, AM, SS, wrought 
Answer:
 concept or principle: structure; concept or principle: corrosion; manufacturing process: selective laser; concept or principle: manufactured; manufacturing process: AM; material: stainless steel; manufacturing process: AM; material: SS; concept or principle: wrought