The related key technologies are solved , such as the roller coaster force model, the track modeling method, the load and boundary determination.
解决了基于ANSYS软件的原子滑车轨道的强度分析的关键问题，如高速滑车的受力模型，轨道的建模方法、载荷和边界条件的确定。
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.
讨论了应用GPS测量重力点的大地高，从而获得地面点的扰动重力（或称纯重力异常）值这样新的重力边值条件，如何从理论与实际上确定重力场的问题。
Based on the determination of 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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