参数识别反问题是偏微分方程反问题的一类，也是在自然科学与工程技术的各领域比较常见的问题。

Parameter identification problems belong to the partial differential equations inverse problems. They are also common in the field of natural science and engineering.

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本论文是国家自然科学基金项目“可信传感器网络路由交换理论与关键技术”的重要组成部分。

This paper is an important part of Natural Science Fund project-routing Theory and Key Technologies of Reliable Sensor Networks.

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技术美是自然科学在机械化大生产下与美的规律紧密联系的产物，与传统手工技术之美有质的区别。

The Technologic beauty which is different in every respect from that of traditional handicraft is the result of tight link between mechanized production and law of beauty.

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