3848
Excellent fusion of the extruded polymer strands and the absence of anisotropy are achieved , as verified by microscopic imaging and measuring the tensile strength parallel and perpendicular to the 3D printing direction .
 concept or principle: fusion; manufacturing process: extruded; machanical property: anisotropy; material: as; concept or principle: microscopic imaging; machanical property: tensile strength; manufacturing process: 3D printing
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: fusion, extruded, anisotropy, as, microscopic imaging, tensile strength, 3D printing 
Answer:
 concept or principle: fusion; manufacturing process: extruded; machanical property: anisotropy; material: as; concept or principle: microscopic imaging; machanical property: tensile strength; manufacturing process: 3D printing