1634
In the current investigation , an ultrasonic imaging system originally developed for visualization of microstructures in sheet metals , with capabilities of generating plane two-dimensional images at spatial resolutions between 1 and 200 μm , was used to quantitatively evaluate a Fused Filament Fabrication ( FFF ) processed 3D test part .
 application: imaging; material: microstructures; material: sheet metals; concept or principle: two-dimensional images; concept or principle: quantitatively; manufacturing process: Fused Filament Fabrication; manufacturing process: FFF; concept or principle: processed 3D
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: imaging, microstructures, sheet metals, two-dimensional images, quantitatively, Fused Filament Fabrication, FFF, processed 3D 
Answer:
 application: imaging; material: microstructures; material: sheet metals; concept or principle: two-dimensional images; concept or principle: quantitatively; manufacturing process: Fused Filament Fabrication; manufacturing process: FFF; concept or principle: processed 3D