The mean ing of K-effect (1 Denied the diffusion mechanism about transposition (2 Proved the vacancy mechanism Partial diffusion coefficients is different 4 Built relationship between micro and macro ⑤ UniversalityThe meaning of K-effect: ① Denied the diffusion mechanism about transposition ② Proved the vacancy mechanism ③ Partial diffusion coefficients is different ④ Built relationship between micro and macro ⑤ Universality