文中较详细地讨论了提高换热器综合传热系数的各种措施，还讨论了完善现有换热器和开发新型换热器等问题。

All measures to improve the complex heat transfer coefficient are discussed in detail together with the improvement of the existing heat exchanger and development of new types.

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SimpleDB是一个简单的数据存储，它缺乏一个完全成熟的关系数据库管理系统(RDBMS)所拥有的完善的功能，但是提供了一种可伸缩的键值存储。

SimpleDB is a simple data storage that lacks the sophistication of a full-fledged Relational Database Management System (RDBMS), while providing scalable key-value storage.

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对土壤热通量的参数化方法和拖曳系数的取值问题进行了讨论，更完善的方法还有待于与实验测量工作相结合。

The parameterization for the soil heat flux and the surface drag coefficient are discussed, and the more perfect method needs to combine further with measure experiments.

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