本文分析了基本抽样程序，并用来解决环境监测的抽样优化问题。
The paper analyze elemental sampling program, and study an optimal sampling policy for environmental monitoring.
目前使用的两种抽样的基本方法是概率抽样和非概率抽样。
The two basic sampling methods in use today are probabilistic and non_probabilistic sampling.
经抽样检验，这样生成的紊流场的相关函数基本上符合紊流模型的相关特性，因而证实了该方法的可行性。
The correlation of so generated turbulent field is found to be in good agreement with the theoretical correlation of the Dryden model, thus the feasibility of the proposed method is verified.
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