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The mechanical properties of the hybrid parts were determined by hardness measurement across the interface and by a tensile test of the dissimilar joints .
 concept or principle: mechanical properties; machanical property: hardness; concept or principle: interface; process characterization: tensile test
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: mechanical properties, hardness, interface, tensile test 
Answer:
 concept or principle: mechanical properties; machanical property: hardness; concept or principle: interface; process characterization: tensile test