relational grade的用法和样例：
例句
- This paper use gery relational interval analysis to treat the test results, and gain asatisfied results.
本文尝试利用灰色关联度分析的方法对试验结果进行处理，并取得了满意的效果。 - A simple method of calculating the grey relational grades of grey numeral sequences whose whiting values are consistent was also obtained.
对取数一致的灰数序列，给出了一种计算灰关联度的简便方法。
