Ключевые слова: accident, action, background, button, buttons, contact, control, danger, design, double, down, electric, emergency, engineering, equipment, factory, fool, forge, forging, hand, heavy, industry, key, lamp, machine, machinery, metal, operate, panel, power, press, prevent, process, production, proof, prove, push, red, safety, set, stamping, start, stop, switch, system, technology, work,