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Within the processing experiments , the laser scanning speed was varied in order to achieve the most economical manufacturing of parts with a density > 99.2 % .Following this comparison , it was found that the manufacturing process of the powder and therefore the particle morphology has the biggest impact on the part density and surface quality .
 enabling technology: laser; manufacturing process: manufacturing; machanical property: density; manufacturing process: manufacturing process; material: powder; concept or principle: particle; concept or principle: morphology; concept or principle: impact; machanical property: density; process parameter: surface quality
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: laser, manufacturing, density, manufacturing process, powder, particle, morphology, impact, density, surface quality 
Answer:
 enabling technology: laser; manufacturing process: manufacturing; machanical property: density; manufacturing process: manufacturing process; material: powder; concept or principle: particle; concept or principle: morphology; concept or principle: impact; machanical property: density; process parameter: surface quality