arithmetic mean英 [ˌærɪθmetɪk ˈmiːn]美 [ˌærɪθmetɪk ˈmiːn]算术平均数；算术（等差）中项；均数计算机化学英英释义nounthe sum of the values of a random variable divided by the number of valuesSynonym:first momentexpectationexpected value双语例句
