Correspondence to a norm.平均量：与标准一致An average.平均Mathematics A perpendicular, especially a perpendicular to a line tangent to a plane curve or to a plane tangent to a space curve.【数学】 正交：一条垂直线，尤指一条相对一条平面曲线的切线垂直线或一条相对一条空间曲线的平面切线垂直线来源：Middle English 中古英语 from Late Latin norm3lis 源自 后期拉丁语 norm3lis from Latin [made according to the square] 源自 拉丁语 [根据直角规制作的] from norma [carpenter`s square] * see gnô- 源自 norma [木匠的直角规] *参见 gnô- 【引伸】nor.mallyadv.（副词）normal,regular,natural,typical同义词>These adjectives mean not deviating from what is common, usual, or to be expected.这些形容词意为不偏离正常的、通常的或期望的事物。 Normal stresses adherence to an established standard, model, or pattern: Normal 强调符合已建立的标准、模型或方式： 例句：normal body temperature;正常体温；例句：normal curiosity.正常的好奇心。Regular indicates unvarying conformity with a fixed rule or principle or a uniform procedure: Regular 指不变地符合已定的规则、方针或统一的步骤： 例句：her regular bedtime;她不变的作息时间；例句：regular attendance at school. What isnatural is proper to, consonant with, or in accord with one`s inherent nature or character: 按时到校。 Natural 形容固有、含有或符合某人内在特性或特点的事物： 例句：a natural fear of nuclear war;对核战争本能的恐惧；例句：a grandparent`s natural affection for a grandchild.祖父母对孙子自然的喜爱。Typical stresses adherence to those qualities, traits, or characteristics that identify a kind, group, or category: Typical 强调符合那些表明一种、一组或一级的数量、特质或特点： 例句：a typical American;典型的美国人；例句：a painting typical of the Impressionist school. 典型的印象主义派画法 参考词汇>