Greek letters are common in mathematical physics and can be found in various formulas. However, compared with English, Greek letters are still difficult to remember and their pronunciation is relatively complicated, so they are easily confused.

Greek uses the Greek alphabet and is also widely used in mathematics, physics, biology, chemistry, astronomy and other disciplines. Greek alphabet, similar to Latin alphabet and Cyrillic alphabet, is a complete phonemic text. Greek alphabet is the earliest writing system in the world in which letters represent vowels and phonemes. Cyrillic letters and Georgian letters used in Russian and Ukrainian are all developed from Greek letters, so people who have studied Russian will feel deja vu when they use Greek letters.

Some Greek words related to Greek letters have entered many languages. For example, the word Delta comes from the name "delta" of the Greek letter δ, because the shape of δ is a triangle.

The pronunciations of Greek letters are: α α: α α, β β: β, γ γ, δδ:δDelte, ε ε ε: ε, ζ:Jettaζ, ε η: Itaeta, θ θ: West Tower theta ι: Aiotaiotaota, κ κ Kappa, and so on.

2.μ μ: Mu Mu, ν ν: Nu, ξ ξ: Cauchy xi, ο: Omicron, ∏ π: pi, ψ ρ: soft ρ, σ: Sigma Sigma, υ: υ, υ.

Expansion symbols are often added above or below the ancient Greek letters, such as acute notes, stress, stress, tilde, partials, rough symbols, softening symbols, etc., so there are 26 different ways to write the vowel letter α in ancient Greek.