fractal LS分形LSfractaln 不规则碎片形fractal dimension of root system根系分维fractal coefficient of soil mass土颗粒的分维系数fractal tree recursion algorithm分形树递归算法fractal/multifractal features分形/多重特征fractal feature Of. gold grade金品位分形fractal interpolation muhiwavelet分形插值多小波FRACTAL INTERPOLATION BASED ON FBM基于FBM的分形插值方法fractal dimension of soil particle分形维数fractal dimension of fragmentation块度分维Fractal and geostatistical analysis分形和地质统计分析