unimodal frequency curve

例句：

1. 1. Thedata is presented in a unimodal frequencycurve.
   数据以单模式频率曲线的形式呈现。
2. 2. The unimodal frequency curve shows thedistribution of the population.
   单模式频率曲线显示了人口分布情况。
3. 3. Theunimodal frequency curve helpsus understand the relationship between differentvariables.
   单模式频率曲线有助于我们理解不同变量之间的关系。