分形理论作为一种描述客观世界的几何工具，在短短的时间内已成功应用于许多学科。
As a mathematic tool of modeling natural geometry, fractal theory has been found wide applications in varied fields with great success.
分形维数是描述自然界和非线性系统中不光滑和不规则几何体的有效工具，是所有分形对象的主要特征之一。
Fractal dimension is usually an effective way that used to describe the non-smooth and non-regular geometry objects in the nature and non-liner systems.
利用球面三角形的几何关系进行了基于STK（卫星工具包）的小卫星轨道交会的规划和设计。
Small satellite orbital rendezvous is designed using the geometric logic of spherical triangle and the STK (Satellite Tool Kit) software.
摘要：分形理论是描述非线性系统中不规则的几何形体的有效工具，应用领域十分广泛。
Absrtact: the fractal theory is an effective tool to describe irregular geometry form and structure in nonlinear system and its application is greatly wide.
以分形几何为理论工具，采用低温氮气吸附法，对四种煤在低温燃烧过程中表面形态变化作了考察。
Using fractal theory as a theoretical tool, the changes of surface morphology of coal chars of four types of coal during low temperature combustion were studied by nitrogen adsorption.
以分形几何为理论工具，采用低温氮气吸附法，对四种煤在低温燃烧过程中表面形态变化作了考察。
Using fractal theory as a theoretical tool, the changes of surface morphology of coal chars of four types of coal during low temperature combustion were studied by nitrogen adsorption.
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