The compared results of different sample methods showed that them eans of the parallel lines was the best one and the theoretical sample number was also determined.
不同抽样方法的比较结果，以平行线法效果最好，并确定了理论抽样数。
Additionally, the method has a great theoretical meaning for the standardization of the sampling interval and sample number in water qualities experiments.
此外，分段映射反演模型对野外水质样本采集实验的规范化具有较大理论指导意义。
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