在铁道部新的土分类标准中，细粒土由按单纯的塑性指数分类改为按塑性图分类。
In the new classification standard of soil adopted by the Railway Ministry, fine particle soils are classified by plastic index diagram instead of plastic index simply.
本文运用模糊数学的方法对膨胀土的膨胀力、自由膨胀率、液限、塑性指数4项指标综合评价，建立模糊识别分类方法。
This article use fuzzy mathematics to appraise 4 indexs include expansion force, free expansion ration, liquid limit, plastic limit and establish a fuzzy method to judge the swell-shrink grade.
本文运用模糊数学的方法对膨胀土的膨胀力、自由膨胀率、液限、塑性指数4项指标综合评价，建立模糊识别分类方法。
This article use fuzzy mathematics to appraise 4 indexs include expansion force, free expansion ration, liquid limit, plastic limit and establish a fuzzy method to judge the swell-shrink grade.
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