新方法首先通过阵列方向矢量的泰勒级数展开获得关于分布源中心DOA的两个近似旋转不变关系。

The new method firstly obtains two approximate rotational invariance relations about distributed sources central DOA by the Taylor series expansion of array steering vector.

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这些法则是一种固定不变的关系。

Theserules are a fixed and invariable relation.

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除非一个应用软件的质量长期不变，在其成本及其提供的商业功能之间的关系，会不断的降低。

Unless the quality of an application's software is sustained, the relationship between its costs and the business function it delivers will continually erode.

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