Ключевые слова: aqueduct, central, circulation, climate, conduit, cylinder, drops, duct, elevated, energy, equipment, freeze, freezer, frost, frosty, gas, hang, heat conduction, heating, hoar, hoarfrost, hot, ice, icicle, industrial, industry, infrastructure, insulation, iron, large, line, main, metal, pipe, pipeline, plumbing, rusty, seasonal, snow, steel, supply, system, technology, transit, transmission, tube, two, water, winter,