3229
Comparing low-pressure printed type V dog bones ( ASTM D-638 ) , with those printed at atmospheric pressure , it was observed that the ABS , PLA and PA6 exhibited an increase in Ultimate Tensile Strength of 9 % , 13 % and 42 % respectively .
 V, pressure, ABS, PLA, Ultimate Tensile Strength
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:
 V, pressure, ABS, PLA, Ultimate Tensile Strength