Low density sampling and mixed sample analysis are dealt with in this paper.

讨论了化探低密度采样和混样分析问题。

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To illustrate the mixed pattern, a sample is provided with this article.

为了演示混合模式，本文给出了一个示例。

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To illustrate the mixed pattern, a sample is provided with this article.

为了演示混合模式，本文给出了一个示例。

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