6640
Additionally , the tensile properties in the print direction were higher than those of compression molded samples .
 tensile properties, print, compression, samples
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:
 tensile properties, print, compression, samples