粒径曲线 meaning in English

grading curve
grain-size curve
mechanical analysis curve

2 . the curve of median diameter well showed the grain - size characteristics of the area , which is negatively correspond with the curve of the susceptibility . the median diameter can be regarded as the effectively alternating indication of the environments in the paper
2 、中值粒径曲线很好地反映了本地区的粒度特征，并与磁化率曲线有很好的负向对应关系，所以本文把中值粒径作为环境的有效替代指标。