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The morphological features , surface roughness , phase content , and corrosion resistance of the MS samples in their aB-fabricated ( ASF ) state were compared after LPEB irradiation .
 machanical property: surface roughness; concept or principle: phase; concept or principle: corrosion resistance; concept or principle: samples; manufacturing process: irradiation
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: surface roughness, phase, corrosion resistance, samples, irradiation 
Answer:
 machanical property: surface roughness; concept or principle: phase; concept or principle: corrosion resistance; concept or principle: samples; manufacturing process: irradiation