对于切削过程的有限元模拟分析，正确的简化模型不仅可以提高计算结果的精度，并且可以大大的减少计算的时间。
In finite element simulation of cutting course, correct predigested model not only may improve precision of calculated result, but also can smartly reduce calculating time.
同时，分析了有限精度计算对所求得的提升结构的影响。
Meanwhile, it evaluates the effects of the finite precision on the lifting coefficients.
结果表明，若仅是为了测定点的垂直位移的高程速率，增加重力测量数据后对形变分析的精度增益十分有限。
Itturns out that the accuracy increase is quite limited by using gravity observation to analyse vertical deformation, if the aim is only to determine point vertical displacement and its velocity.
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