介绍了几种由小试数据估算化学反应热的方法。

This paper mainly introduces the method of calculating chemical reaction heat.

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根据实验数据估算模型的参数，模拟出了冬小麦在不同生长阶段的结构。

The parameters of the model were estimated from the measured data and the architecture of winter wheat at different growth stages was reproduced.

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例如，我们用艾滋病死亡率数据估算到印度艾滋病毒感染人群可能是40%，低于以前的估计。

For example, we worked backward from AIDS mortality data to estimate that the number of HIV-infected people in India may be 40% less than previous estimates.

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Again, I don't want to make too much of my estimates because different people would estimate these things in different ways, but that's the theory.

再说一次，我不想太过强调我的估算,因为不同的人,会用不同的方法估算这些数据，但这只是个理论。

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So, they started to do collecting of data on mortality and they developed something called actuarial science, which is estimating the probability of people living.

他们开始收集死亡率的数据,并且发展出精算学,用来估算人在各年龄段死亡的概率

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