单词	磁石电话机
释义	磁石电话机magneto telephone set
随便看	difference of zero difference operator difference, or quarrel difference, phase difference phase angle difference potential difference-- potential difference potentiometer difference product difference quantity difference quotient difference quotient -- quotient of difference difference quotient ; quotient of difference difference register difference register--dr difference register，dr difference report difference ring differences difference scale difference scaler difference scheme difference sequence difference sequent difference set