查询词典 mathematical models

The 3-D single phase simulation using CFX for the rod bundle channnel was going on by choosing the reasonable mathematical and physical models and boundary conditions. After a lot of numerical calculations, the sensitivity of gemotery was validated. The flow and heat transfer characteristics for several typical velocities were numerically analyzed and visually showed. The results show that the CFX simulation can be used for designing and optimizing fuel assembly in reactor engineering.

通过选定合理的数学、物理模型和边界条件，采用通用CFD程序ANSYS CFX 10.0对带有AGA-2G定位格架的5×5棒束通道流场进行了三维单相数值模拟，经过大量计算，验证了厚度、刚突等几何敏感性，得到了带定位格架棒束通道内的速度、压力和温度分布，分析了定位格架对流场、温度场的影响，直观地获得了搅混叶片的搅混效果，并将结果同实验值进行了初步比较。

In the analysis, simple models and mathematical approximations are introduced.

从理论预计与实验结果的接近来看，这种解释是有意义的。

Some students have shown mathematical equivalences between two kinds of models, one of which applies a form of multi-level selection theory and the other being a form of " individualism."

近来已经有学者表明，基于多层选择理论和个体论的两种模型在数学上是等价的。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。