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The use of LSP during the building phase of SLM as a “ 3D LSP ” method would possibly give the advantage of further increasing the depth and volume of compressive residual stresses , and selectively treating key areas of the part , thereby further increasing fatigue life .
 concept or principle: phase; manufacturing process: SLM; material: as; concept or principle: 3D; concept or principle: volume; machanical property: residual stresses; process parameter: areas; machanical property: fatigue life
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: phase, SLM, as, 3D, volume, residual stresses, areas, fatigue life 
Answer:
 concept or principle: phase; manufacturing process: SLM; material: as; concept or principle: 3D; concept or principle: volume; machanical property: residual stresses; process parameter: areas; machanical property: fatigue life