第一方面表征一个标志的构形与等级变化之间的关系，称为标志权相对差。
The first aspect expresses the relationship between the structure pattern and grade variation of an indication which is called relative difference of weight values of the indication.
视场等级可以手动选择也可以自动切换，还可以在缩放时临时性地关闭等级变化。
View levels can be selected either "manually" or "automatically", and you can also temporarily switch off view level changes when zooming in or out.
通过和常规的回归方法相比，阐明了集对分析方法在研究居民消费增量的等级变化问题方面的优点。
The investigation demonstrates that SPA method proposed herein is applicable to problems of grade classification and trend forecast.
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