4339
The present results suggest that the corrosion of SLM prepared Mg alloys could be greatly improved once the influence of powder characteristics is further understood and controlled .
 concept or principle: corrosion; manufacturing process: SLM; material: Mg alloys; material: be; material: powder
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: corrosion, SLM, Mg alloys, be, powder 
Answer:
 concept or principle: corrosion; manufacturing process: SLM; material: Mg alloys; material: be; material: powder