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control device education electric electrical energy engine engineering equation equipment experiments formula gear generator graphics industrial industry knowledge laboratory learn lesson machine management metal meter model monitor motor panel power research room school science seminary study teach technical technologies technology test training universityDnepr, Ukraine - March 30, 2017:Training Center With Electric Machines, Generators, Motors, Control Panel.Blackboard With Graphs Editorial Photo
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Dnepr, Ukraine - March 30, 2017:Training center with Electric machines, generators, motors, control panel.Blackboard with graphs #190602687
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Dnepr, Ukraine - March 30, 2017:.Training center with Electric machines, generators, motors, control panel..Blackboard with graphs and formulas in the classroom.
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