Ключевые слова: abstract, acquirements, advection, ancient, atom, bulk, calligraphic, character, chemistry, coefficient of viscosity, colour, concentration, demonstration, design, diffusion, direction, effusion, element, force, gradient, gradual, greek, homogeneous, household, kinematic viscosity, kinetic, laboratory, logo, material, molecule, motion, movement, particle, phenomena, physics, pressure, quantity, rudiment, school, science, spread, spreading, stoichiometric coefficients, substance, temperature, text, transport, variable, viscosity,