对于编制排名而言，最重要的问题是，是否存在一个线性函数，能够对这个四维的数据集进行降维，得到一个一维的数据集（生活质量指数）。
To create a ranking, the important question is whether there is a linear function that reduces this four-dimensional dataset to a one-dimensional set.
引入半梯形和降岭形的隶属函数，并给出隶属度函数来描述缺陷尺寸与检测概率之间的模糊关系。
After semi-trapezoid and drop-mountain shaped subordinate functions were introduced, the fuzzy relationship between the size of defects and POD was described by subordinated function.
本文对非降或非增单值函数光滑曲线的绘制方法进行了改进，从而合理地绘制出毛管压力曲线。
In the paper, the technique of drawing a smooth curve of non-reduced or non-increased single-valued function is improved so that the capillary pressure curve can be drawn rationally.
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