We used informant networks to characterize all maternal deaths, and a capture-recapture method to estimate the total number of maternal deaths.

我们采用监测网络来收集所有产妇死亡方面的信息，并采用重复捕取的方法来估计产妇死亡总数。

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A simple method using the output rainfall of the cloud model to estimate the total areal rainfall amount over different periods within 24 hours is suggested.

本文还提出一种用云模式的输出雨量(模式雨量)来预测24小时内的不同时段的地区累积降水量的简单方法。

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So the quality of neutron radiograph and, relevant products under NDT can be well controlled. The method to estimate total indistinctness of is also introduced.

由此可以更好地控制中子照相的质量，即更好地控制产品的质量，同时还介绍了中子照相总不清晰度的估算方法。

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