Ключевые слова: atomic, breaker, chemical, chemistry, circuit, composition, compound, contrast, detachment, dielectric, drawing, etchant, flat, fluorine, formula, gas, greenhouse, hexafluoride, hypervalent, icon, inert, insulated, insulator, line, microbubble, molecular, molecule, retinal, sf6, skeletal, structure, sulfur, switchgear, tracer, ultrasound,