瑞利准则 Traditional 瑞利準則 Ruì lì zhǔn zé 🔊 Rayleigh criterion (optics) + Keep this word Meanings Ruì lì zhǔn zé name 瑞利準則 Rayleigh criterion (optics) Its characters 瑞ruìlucky利lìsharp准zhǔnaccurateHSK 4则zébut; thenHSK 6