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Vertically built LPBF Zn tensile samples had higher strength and ductility compared with horizontally built samples , indicating strong anisotropy of the mechanical properties .
 LPBF, tensile, samples, strength, ductility, samples, anisotropy, mechanical properties
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:
 LPBF, tensile, samples, strength, ductility, samples, anisotropy, mechanical properties