(2)β: magnetic flux coefficient, angle and coefficient.

(3)ω: ohm, angular velocity, angular frequency, electric angle of alternating current, mass fraction in chemistry, and unsaturation.

(4)γ: thermal conductivity, angle and specific heat capacity ratio.

"α, β, ω, γ" are all Greek letters, which are used in Greek and widely used in mathematics, physics, biology, chemistry, astronomy and other disciplines.

Extended data:

The meaning of other Greek letters:

(1)δδδδδ variation; Density; diopter

(2) radix of ε ε EP' silon logarithm

(3)ζzeta zat？ Coefficient; Azimuth; Impedance; Relative viscosity; atomic number

(4)ηetaeit？ Lag coefficient; Efficiency (lowercase)

(5)θθθit？ Temperature; phase angle

References:

Baidu Encyclopedia-Greek alphabet