保持不变的

• Let : n n " denote a rearrangement of all non - negative integer by which the integer n is replaced by the integer n . in this paper , the growth of two kinds of dirichlet series with rearrangement of the coefficients is investigated
  本文研究了两类狄里克莱级数的系数重排后的增长性，得到了全平面和半平面上有限级狄里克莱级数的系数经过重排后级和型保持不变的充要条件。
• Though we know the forms of partition function before and after transformation , we will not study directly the property of partition function itself but the transformation which makes it unchanged with the idea of renormalization group
  我们虽然利用p - v路方法写出了重整化变换前后配分函数的形式，但并没有直接研究配分函数本身的性质，而采用了重整化群的思想，研究使配分函数保持不变的变换。
• The same idea is used to the line induction motor . a method is proposed to minimize the loss by finding the relation between the efficiency and the stator flux . through simulation , we can find that this method give a higher efficiency
  通过建立损耗和定子磁链的关系，得出损耗最小时定子磁链的值，从而实现损耗最小直线电机的直接力控制，在输入功率保持不变的条件下，电机的运行效率最优。
• Coke powder is reasonably utilized , our calcium carbide product can obviously reduce powder consumption and reduce the cost without much changes on the quality target of the products ; meanwhile it can also lengthen the life span of the furnace and improve the operation environments
  焦炭粉末得到合理利用，电石产品在质量指标基本保持不变的情况下，电耗明显下降，降低了成本；同时也达到延长了炉龄，改善了操作环境。
• The traditional invariant features in translation , rotation and scaling transformation ca n ' t satisfy the needs of advanced object recognition . so the research about 3d invariance prospered in recent years is becoming one of the active research fields in computer vision
  在平移、旋转、尺度等变换下保持不变的常规特征已不能满足新的目标识别的需要，近年来兴起的3d不变性研究正成为计算机视觉中一个非常活跃的研究领域。
• Note that in fractal encoding , each range block is to compare with domain blocks after some grey - level affine map . hence we first put forward a kind of image quadrature invariant of affine maps above , which can be thought of a generalization of mario feature
  由于在分形编码时值域块实际上是与经过灰度仿射变换之后的定义域块进行比较，因此我们首先提出了一种在灰度仿射变换下保持不变的图像矩不变量，它可看作是mario特征的推广。
• Furthermore , with the induction of precision order of a type - function u ( r ) , the necessary and sufficient conditions of the dirichlet series , which keep unaltered the order and the type , are obtained . such a result naturally has a bearing on " rearrangement problem " of power series and abel summable series
  此外，当狄里克莱级数引入精确级后，得到了有限级狄里克莱经过重排后的精确级以及关于型函数u ( r )的型保持不变的充要条件。
• ( 4 ) in the situation mat other variables keep unchanged , the sensitiveness degrees of and to are different , the sensitiveness of c to should obviously be stronger than to . ( 5 ) shows a tendency to drop when f increases . - f is different under different mean value
  ( 4 )在其它变量保持不变的情况下，粘土边坡的可靠性指标受土性参数c ，均值的影响程度是不一样的，对_ c的敏感性公路土质边坡稳定可靠性分析及综合防护体系研究明显要强于声， 。
• It was found that the interface morphology of ni , cr , al - tac eutectic in - situ composite evolved from plan to cell and then to dendrite with the increase of solidification rate , if the gradient retained constant . in the same time , the eutectic microstructure also evolved from rod to cell and then to dendrite
  本工作发现，在温度梯度基本保持不变的条件下，随着凝固速率的增大， ni ， cr ， al - tac共晶自生复合材料的凝固界面由平界面向胞状及枝状界面逐渐转化。
• A important conclusion is verified from these analysis that although the azimuth resolution of sar radar is theoretically not connected with parameters such as radar range and center frequency , in fact , on the condition of same resolution , when the range becomes further and center frequency become lower , the requirement for the radar power gain production , signal processing and precision of ins will be higher , therefore the imaging will become more difficult
  同时也证明了一个重要的结论：从理论上讲，合成孔径成像的方位分辨率与作用距离、雷达工作频率等参数无关，但实际上，在分辨率保持不变的情况下，随着作用距离的提高，工作频率的下降，对雷达的功率孔径积、信号处理以及惯导精度的要求会越来越高，从而成像也会变得越来越困难。