Ключевые слова: calibration, check, company, condition, control, correct, eco, electricity, emission, engineering, environmental, expertise, facility, factory, fix, foreman, fuel, gear, handy, hard hat, identify, industry, inspecting, installation, leak, locomotive, machinery, maintenance, malfunction, mechanical, oil, practice, professional, railway, regular, regulate, repairing, safety, service, standard, sustainable, system, technical, technician, testing, tool, train, working, workshop,