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.

β detailed explanation:

Beta(ㄅㄟˋㄊㄚˇ) (capital β, lowercase β) is the second Greek letter. In ancient Greek, β stands for voiced double-lip stop [b], in ordinary Greek it is fricative [v], and the modern pronunciation is still [v]. In modern Greek, "μ π" (MP) stands for sound [b].

In modern Greek, the letter combination "μ π" means [b] at the beginning of a word, and [mb] in other cases, but it is often simplified to [b]. The American English pronunciation of voiced lip fricative β in the international phonetic alphabet is /'be? . t？ /,but the pronunciation of British English is /'bi? . t？ / 。 б, в of Cyrillic letters and b of Latin letters are all changed from Beta.

Note: There is a letter in German? It is very similar to β, but they are not the same letter and cannot be used equally. Please don't confuse them. ? German pronunciation of "esszet" (that is, the linking of German letters S and Z, and/? s 'ts？ T/), not from β, is only used in German.