结果表明，利用通用坐标转换程序，结合解析法求算面积的方法是解决无测积功能GPS测量面积的理想方法。

The results showed that using universal coordinate transform program and analytic geometry method could resolve the problem of measuring area for GPS without function of measuring area.

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利用主中理想的概念给出了软代数能分解为链直积的一个条件。

In this paper, we introduce concepts of main weak ideal and discuss their basic properties.

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最后，给出模糊理想的积和模糊同余关系的积的概念，讨论了它们的一些性质。

Finally, we give the concepts of the product of fuzzy ideals and the product of fuzzy congruence relations. Some properties of them are discussed.

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