简要介绍分形的基本概念，探讨用分数维法模拟矿体表面的途径。
The basic conception of fractal is introduced, and the way to generate an orebody surface by means of fractional dimension is discussed in this paper.
分数维的计算采用改进的盒子计数法。
The modified box-counting method is used in estimating fraction dimension.
目的：用“分数维”彩色血流信号定量法来探讨肾脏内部彩色血流信号与肾脏结构及功能的关系。
Objective: To discuss the relationships of the color Doppler signals and the structures and functions of the kidney by Fractal Dimension.
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