空间波法适合于测量大面积目标的介电常数，所以是测量地物微波介电特性的一种较好的方法。
The space-wave method, suitable for extended surface targets, is a preferable method for permittivity measurement of ground materials at microwave frequencies.
本文系统地研究了基于模式识别知识检测特定类目标、线性体目标和大面积目标变化的变化检测方法。
In this paper, the change detection methods using pattern recognition knowledge for the specific targets, the linear shape targets and the large area targets are discussed.
但是当它坚持一些可实现的、适当的目标时能提供有用的焦点，比如增加海洋中自然保护区的面积。
But when it sticks to achievable, measurable targets, such as increasing the area of nature reserves in the ocean, it can provide a useful focus.
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