累积频率曲线

绘制粒度概率累积频率曲线图的PC-1500计算方法

PC-1500 computation method to construct the accumulated frequency curve of grain size probability

该方法能以累积频率曲线的形式直观地对任意性能水平下不同控制系统的鲁棒性能进行比较；

The method quantifies the system robustness based on cumulative frequency curves .

从不同的方法来看，各种方法互有优缺点，如标准化方法不适应于人为影响很严重的区域，相对累积频率曲线法适用于有明显点源污染的区域。

From a different point of view , each method has advantages and disadvantages , such as the normalization method is not suited to serious polluted region , while the relative cumulative frequency curves is suitable to regions which have significant point source pollution .

利用概率累积曲线与频率曲线分析浙江省平湖县乡村聚落群的聚落组成特点，初步认为本区聚落群由发展聚落、现存聚落、残遗聚落所组成。

The constitution of rural settlements group in Pinghu County is demonstrated with probability accumulation curves and frequency curves , and it is set forth that the settlements group in this county consist of the developing settlements , the existing settlements and the survival settlements .