钟型曲线 meaning in English

bell curve
bell-shaped curve

Iq tests are designed to give approximately normally distributed results , which causes a " bell curve " graph of iq score frequency . colors delineate one standard deviation
智力测验是被设计用来符合常态分布结果(又叫做钟型曲线)的结果分布图的.不同颜色的线定义著标准差
Chen , xueming . 1991 . “ explorations on alonso ' s five bell - shaped propositions in economic growth , social inequality , regional inequality , geographic concentration and demographic transition . ” unpublished ph . d dissertation , university of southern california
陈雪明， “对阿朗索有关经济发展，社会不平等，区域不平等，地理集中和人口变迁五个过程的钟型曲线预言的实证” ， 1991年南加州大学博士论文。