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Instead of using electron beam as the energy source in EBM , the SLM technology uses laser beam with adjustable wavelength .
 concept or principle: electron beam; material: as; application: source; manufacturing process: EBM; manufacturing process: SLM; concept or principle: laser beam; concept or principle: wavelength
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:
 concept or principle: electron beam; material: as; application: source; manufacturing process: EBM; manufacturing process: SLM; concept or principle: laser beam; concept or principle: wavelength