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In this study , commercially pure titanium ( CP-Ti ) parts were successfully fabricated by selective laser melting ( SLM ) using cost-effective hydride-dehydride ( HDH ) Ti powders for the first time modified by jet milling .
 titanium, fabricated, selective laser melting, SLM, Ti powders, milling
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:
 titanium, fabricated, selective laser melting, SLM, Ti powders, milling