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The solid-state friction stir welding ( FSW ) process was used to join Al–Si12 parts fabricated via the selective laser melting ( SLM ) technique .
 concept or principle: solid-state; manufacturing process: friction stir welding; manufacturing process: FSW; concept or principle: process; concept or principle: fabricated; manufacturing process: selective laser melting; manufacturing process: SLM
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: solid-state; manufacturing process: friction stir welding; manufacturing process: FSW; concept or principle: process; concept or principle: fabricated; manufacturing process: selective laser melting; manufacturing process: SLM