There is a keypad on the sogou input method, and ω can be found in the special symbol "Greek | Latin".

Press and hold Alt+427 12, and then release.

Foreign language pronunciation -omega/? m？ ɡ? /

Chinese pronunciation-Omega

Ω is a symbol with different meanings in various aspects: it is a Greek letter with different meanings in mathematics and physics. It represents the angular velocity of sine function in mathematics, angular velocity in physics (related to circular motion) and mass fraction in chemistry.