对称的

Results from customer data of a certain Chinese telecommunication company and the fact that the churners and the non-churners have different misclassification costs demonstrate that by altering the sampling ratio of churners and non-churners,this cost-sensitive learning method can considerably reduce the total misclassification cost produced by traditional classification methods.

基于某电信企业的客户数据，及流失客户和非流失客户代价非对称的实际，实证研究结果表明，CS-C4.5通过调整流失类和非流失类样本的比例，大大降低了传统分类算法的样本错分总代价。

Through studying the singular points of the plane differential systems, the sufficient conditions of the nonexistence of limit cycle for the system are obtained by means of comparing theorem, analyzing divergence and change of variable.

通过对微分系统的奇点进行研究，借助比较定理，将该方程与其对称的方程进行比较，并通过分析散度和变量代换的定性分析，得到了其极限环不存在的充分条件。

In order to satisfy the guidance task of Suborbital Launch Vehicle, based on the SLV s plane symmetry lifting body figuration, the SLV selects the straight slope formal attack angle, mending the guidance of Launch Vehicle.

为了更好地满足亚轨道飞行器的制导任务需求，基于亚轨道飞行器面对称的升力体外形，采用直线斜率形式的迎角变化规律，改进了现有的运载火箭制导方法。

Conformation of CaM has changed greatly after bound by Ci, with the result that the binding sites and interaction module can be roughly determined after chemical shifts assignment, perturbation and calculation of KD, which supports the supposal that CaM and CNA C-terminal were in symmetrical homodimer complex2. In addition, the possible position of"NewCBD"in the scale of residue 430-450 and classification of functional domains in C-terminal have also been discussed.

结合了Ci的CaM构象较之于其自由状态发生很大改变，经化学位移指认、微扰实验和解离平衡常数计算后可以初步确定两者的结合位点以及作用模式，支持了CaM与CNA C末端片段以对称的同二聚体形式命名为(CaM·Ci2复合的猜想，推断出"NewCBD"可能存在于430-450区间，对现有的C末端功能区划分作出了一些改进。

In Particular, the tangent stiffness matrix in the incremental relation becomes symmetric, ensuring the efficiency in the numerical analysis, whereas the integrated constitutive relation serves as a guide, ensuring the convergence on the physically feasible stress strain relation.

值得一提得是，增量本构方程中的切线劲度矩阵是对称的，使得在进行数值分析时十分有效。而全量本构方程作为确保实际可行的应力应变滞回圈收敛的向导。

This law says that the shape of the ending is symmetrical to the shape of the beginning.

这一定律的内容是：结局的形态是与开端的形态对称的。

To obtain the RCS of dipole-array antennas, the system of electric field integral equations is turned into a linear algebra system whose coefficient matrix is a symmetric block Toeplitz complex matrix by using Calerkin method with pulse basis functions.

为计算线天线阵列的雷达散射截面，用脉冲函数为基函数的Galerkin法将线天线阵列的电场积分方程组转化为一个线性方程组，其系数矩阵是一个对称的二重复Toeplitz矩阵。

The stability condition and local truncation error for the schemes are discussed.

对求解三维热传导方程利用待定参数法构造出一族对称的含参数的，截断误差为O的便于计算的三层显格式，并讨论了其条件稳定性。

In chapter 1,we discuss the certainty of synthesis of interest.Interest is afunction of demand,power and information.The foundation of synthesis ofeconomic interest is complicated economic demand and complicatedeconomic power.

第一章首先由利益的三个内在要素——需要、信息和权力——引出利益综合的必然性：非对称的需要、信息与权力结构，进而，分析经济利益综合的基础：综合经济需要和综合经济权力。

The costs of transacting arise because information is costly and asymmetrically held by the parties to exchange.

交易费用的出现是由于信息是昂贵的，而且交易双方所拥有的信息是不对称的。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。