8565
Experimental results on solid printed ( no infill ) samples , through four different- sized nozzles , have shown the newly proposed method produces a 6.5 % increase in density and a 7.2 % improvement in maximum in-plane shear stress per millimetre increase in nozzle size , compared with the aligned method of FFF .
 concept or principle: Experimental; process parameter: infill; concept or principle: samples; machine or equipment: nozzles; machanical property: density; machanical property: shear stress; machine or equipment: nozzle; manufacturing process: FFF
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: 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} 
 Entities: Experimental, infill, samples, nozzles, density, shear stress, nozzle, FFF 
Answer:
 concept or principle: Experimental; process parameter: infill; concept or principle: samples; machine or equipment: nozzles; machanical property: density; machanical property: shear stress; machine or equipment: nozzle; manufacturing process: FFF