This paper discusses the problem of gravity field determination by application of such a new gravity boundary condition as the disturbing gravity by use of GPS.
Based on the determinationof optimizing parameters and boundary equations, the cropland using structure in Fujian Province was optimized by the model of linear programming.
在确定优化参数和约束方程的基础上，借助线性规划模型进行福建省耕地利用结构优化。
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The results shows that the corrosion is an ideal austenite crystal boundary corrosion for pipe line steel. The accuracy of adopted determination method is high.