The mitral-valve tenting area was also measured and used as a quantitative index for leaflet stiffening and apical displacement of leaflet coaptation. 对二尖瓣幕状区也进行测量，作为定量参数评价发生瓣叶僵硬和瓣叶接合处顶部移位。
A quantitative index Df, as the ratio of steady infiltration rate fp and lower layer conductivity Ks, for finger flow development was proposed, and its criticalvalue was found to be 0.02. 提出了以稳渗率fp与下层土饱和导水率Ks的比值Df作为判断指流产生的量化指标，并初步分析得到 Df的临界值为0.
The research indicated that the fractal dimension D can avoid the some shortcomings of CSIR method in evaluating the quality of rock mass, and can be used as a quantitative index for evaluating the quality of rock mass. 研究表明,分维数D能够弥补方法CSIR在评价岩体质量中的某些不足,可以作为岩体质量评价的一个定量指标。
So, we can try to discover the relationship between riverway’s fractal dimension and river flood, and find a quantitative index to help establish some strategies of controlling river flood. 因此，我们可以通过研究黄河下游河道分形维数与洪水之间的关系，找出二者间的关联，为制定防洪决策提供定量化的参考指标。