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Microhardness at different depths of the joint is measured and the strength of the joint is determined using a tensile test .
 concept or principle: Microhardness; concept or principle: joint; machanical property: strength; concept or principle: joint; 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: Microhardness, joint, strength, joint, tensile test 
Answer:
 concept or principle: Microhardness; concept or principle: joint; machanical property: strength; concept or principle: joint; process characterization: tensile test