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Results show that flexural strength , modulus and ductility are influenced by laser energy density and flexural strength and modulus of 1.37 MPa and 32.12 MPa respectively are still achievable at a lower laser energy density of 0.016 J/mm2 ( Laser power of 6 W ) .
 flexural strength, ductility, laser energy density, flexural strength, MPa, MPa, laser energy density, Laser power
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:
 flexural strength, ductility, laser energy density, flexural strength, MPa, MPa, laser energy density, Laser power