Alpha beta gamma followed by delta. Alpha, beta, gamma and delta are all Greek letters. Greek alphabet is a letter used in Greek, and it is also widely used in mathematics, physics, biology, chemistry, astronomy and other disciplines. Greek letters are similar to English letters and Russian letters, but with different symbols and the same phonetic attributes.
More comprehensive: α angle, coefficient. β magnetic flux coefficient, angle, coefficient. γ conductivity coefficient. δ change, density, diopter. The cardinal number of ε logarithm. Zeta coefficient, azimuth, impedance, relative viscosity, atomic number. η lag coefficient, efficiency. θ temperature, phase angle. Small, a little. κ dielectric constant. λ wavelength, volume. μ permeability coefficient, micro (one thousandth), amplification coefficient.
ν magnetoresistive coefficient. π pi = circumference/diameter = 3. 14 16. ρ resistance coefficient. Angular velocity, dielectric flux, angle. Ω ohm, angular velocity, angle.