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The electrical and mechanical properties of the sintered samples are evaluated by conductivity , hardness measurements and tensile tests , respectively .
 application: electrical; concept or principle: mechanical properties; manufacturing process: sintered; concept or principle: samples; machanical property: conductivity; machanical property: hardness; process characterization: tensile tests
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: electrical, mechanical properties, sintered, samples, conductivity, hardness, tensile tests 
Answer:
 application: electrical; concept or principle: mechanical properties; manufacturing process: sintered; concept or principle: samples; machanical property: conductivity; machanical property: hardness; process characterization: tensile tests