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Due to the microstructure changes and the porosity suppression , the O-LHAM almost eliminated the anisotropy of tensile strength and improved the elongation by up to 34 % .
 microstructure, porosity, anisotropy, tensile strength, elongation
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:
 microstructure, porosity, anisotropy, tensile strength, elongation