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The first results of a wide experimental campaign devoted to assess the geometrical and mechanical characterization of Wire-and-Arc Additive Manufactured stainless steel elements evidence the need of proper evaluation of an effective geometry to derive the main mechanical parameters , which differ from the traditionally manufactured stainless steel material .
 concept or principle: experimental; application: mechanical; manufacturing process: Additive Manufactured; material: steel elements; concept or principle: geometry; application: mechanical; concept or principle: manufactured; material: steel material
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:
 concept or principle: experimental; application: mechanical; manufacturing process: Additive Manufactured; material: steel elements; concept or principle: geometry; application: mechanical; concept or principle: manufactured; material: steel material