【经】 算术级数, 等差级数

arithmetic and logical unit【计】;arithmetical and logical unit【计】;

arithmetical chart

arithmetic shift【计】;arithmetical shift【计】;shift arithmetically【计】

arithmetical unit

arithmetic mode【计】;arithmetical mode【计】;

arithmetic circuit【计】;arithmetical circuit【计】;operational circuit【计】

arithmetic function【数】;arithmetical function【数】;

arithmetical unit