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Since the deposition patterns affect the stresses and distortions , we examined their effects on multi-layer wire arc additive manufacturing ( WAAM ) of Ti-6Al-4V and Inconel 718 components experimentally and theoretically .
 concept or principle: deposition; manufacturing process: wire arc additive manufacturing; manufacturing process: WAAM; material: Ti-6Al-4V; material: Inconel 718; machine or equipment: components
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: deposition, wire arc additive manufacturing, WAAM, Ti-6Al-4V, Inconel 718, components 
Answer:
 concept or principle: deposition; manufacturing process: wire arc additive manufacturing; manufacturing process: WAAM; material: Ti-6Al-4V; material: Inconel 718; machine or equipment: components