The cumulative probability distribution ( cpd ) and probability density function ( pdf ) of the magnitude of signals with noise are approximated by the cumulate percentage distribution ( cpd ) and percentage density ( pcd ) respectively by sorting and discretizing . the simulation verfies the following 含噪讯号强度之累积机率分布及机率密度特性，则依强度递增排序法，换算成累积百分比分布及百分比密度近似之。
2.
The particle collection facility was developed based on the rule of particle colliding and congregating in high acceleration srm . the coagulate pattern of particle was gained through electron microscope scanning . percentage distribution of particle numbers and mass according to particle diameters was obtained 通过粒子收集试验和对收集到的粒子进行电镜观察，分析了粒子的聚集特点，获得了试验条件下的颗粒数分数和质量分数随颗粒直径的分布曲线，并针对温度因素进行了修正。
