本文采用相空间有限元方法求解了柱形临界多群中子输运问题。
The phase-space finite element method is applied to the multigroup neutron transport equation in cylindrical critical systems.
其次，利用空间有限元方法，对结构在不同温度作用下的响应进行了分析计算。
Secondly, the use of space finite element method, the structure under different temperatures in response to the analysis.
而用三维空间有限元方法计算总振动固有频率是比较准确的，但是耗费时间和精力都比较多。
The results of three dimensions space FEM model calculation has been proved to be more accurate, but it consumes too much time and money.
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