在差值分析和回归理论的支持下，分析了干旱区植被变化的空间特征；
Using by the method of Difference Analyze and the theory of Regression Analyze, the analyzed the spatial characteristic of vegetation change in arid land.
圆度误差值为组建用于动态测量精度理论研究的分析实验系统做准备。
The roundness error serves the preparation for setting up the analyzing experiment system for theory research of dynamic measurement precision.
并对采样点数与残差值的关系进行了分析和计算。
The relation between the number of sampling points and the remainder error is discussed.
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