3136
Electrical analysis of printed conductive tracks on polymer surfaces was performed during mechanical testing ( static tensile and flexural testing and dynamic fatigue testing ) to assess robustness of the printed circuits .
 application: Electrical; machine or equipment: printed conductive; material: polymer; process characterization: mechanical testing; machanical property: tensile; process characterization: testing; concept or principle: dynamic; process characterization: testing; machanical property: robustness
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, printed conductive, polymer, mechanical testing, tensile, testing, dynamic, testing, robustness 
Answer:
 application: Electrical; machine or equipment: printed conductive; material: polymer; process characterization: mechanical testing; machanical property: tensile; process characterization: testing; concept or principle: dynamic; process characterization: testing; machanical property: robustness