5704
The microstructure and mechanical properties of lattice structures of various relative densities manufactured by Electron Beam Melting were analyzed .
 concept or principle: microstructure; concept or principle: mechanical properties; engineering feature: lattice structures; machanical property: relative densities; concept or principle: manufactured; manufacturing process: Electron Beam Melting
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: microstructure, mechanical properties, lattice structures, relative densities, manufactured, Electron Beam Melting 
Answer:
 concept or principle: microstructure; concept or principle: mechanical properties; engineering feature: lattice structures; machanical property: relative densities; concept or principle: manufactured; manufacturing process: Electron Beam Melting