781
However , due to larger melt pool widths and higher energy inputs than PBF methods , local thermal history effects produce significant location-dependent microstructure , porosity , and mechanical behavior that necessitates thorough quantification of this emergent technology .
 material: melt pool; manufacturing process: PBF; concept or principle: microstructure; machanical property: porosity; application: mechanical; concept or principle: technology
Please list all entity words in the text that fit the category.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} 
Answer:
 material: melt pool; manufacturing process: PBF; concept or principle: microstructure; machanical property: porosity; application: mechanical; concept or principle: technology