sampling pocket method

例句：

1. 1. The sampling pocket method is a statistical technique used to estimate population parameters.
   抽样口袋法是一种统计技术，用于估计人口参数。
2. 2. In the sampling pocket method, each sample point is assigned a probability value based on its distance from the central point.
   在抽样口袋法中，每个样本点根据其距离中心点的距离分配一个概率值。
3. 3. The sampling pocket method has been widely used in various fields such as economics and ecology.
   抽样口袋法在经济学和生态学等领域得到了广泛应用。