Ключевые слова: abstract, analysis, background, biology, biotechnology, bright, butter, chemist, chemistry, clean, closeup, color, concept, container, drop, element, empty, energy, equipment, experiment, flask, flasks, gasoline, ingredient, laboratory, liquid, metal, microbiology, modern, nature, object, oil, petrol, petroleum, pharmaceutical, power, production, reaction, refinery, research, science, scientific, shape, study, technology, test, toxic, transparent, treatment, tubes,