1066
The Taguchi method and ANOVA were used to determine the effects of travel speed , wire feed rate , current , and argon flow rate on the responses including bead shape and size , bead roughness , oxidation levels , melt through depth , and the microstructure .
 Taguchi method, feed, argon, bead, bead, oxidation, melt, microstructure
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 Taguchi method, feed, argon, bead, bead, oxidation, melt, microstructure