5194
Hence , this paper presents two novel applicator tools specifically designed to test the spreadability of l-PBF powders in thin layer application .
 machine or equipment: tools; engineering feature: designed; manufacturing process: l-PBF; process parameter: layer
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: tools, designed, l-PBF, layer 
Answer:
 machine or equipment: tools; engineering feature: designed; manufacturing process: l-PBF; process parameter: layer