1, α α α a: lf α angle; Coefficient.
2.βββ magnetic flux coefficient; Angle; Coefficient.
3.γγga:mγ conductance coefficient (expressed in numbers).
4. Delta delta delta change; Density; Refraction.
5. Cardinality of ε epsilon logarithm.
Relational character
For example, "=" is an equal sign, "≈" is an approximate sign, "≦" is an unequal sign and ">" is a greater than sign. "
Baidu encyclopedia-mathematical symbols