有效公式

We find that, i the diagrams withthe annihilation topology have a suppression factor 〓 relative to those withspectator topology; ii our results are much different from other model predic-tions for some decays modes; iii the pure W-exchange process 〓with a branching ratio 〓 can be found even before the B-factory era;iv for B →ππ,πK and KK decays, our results are well below the experimen-tal upper limits, but they are about one order of magnitude below the BSWpredictions.

其次，我们从有效哈米顿出发，利用微扰QCD方法系统研究了末态为两个赝标介子的B介子衰变过程，对可能的图进行了分类，给出了一般的计算方法和一般性公式，并且将其应用于纯W湮灭和W交换过程，B→ππ，πK和KK过程以及〓→PP过程。

Aerial image can be computed fairly fast by this method compared with the rigorous solution of the Hopkins equation, especially for the situation of many sparse aerial points which is often met in OPC application.

一个双线性光学系统分解成为一组空间域卷积核，并通过对版图的空间域卷积来计算空间光强。与采用Hopkins公式的SPLAT相比，这种方法能快速地计算空间光强。尤其对于大面积计算显得更为有效。

A numerical calculation for the conversion rate of calcium superphosphate products was derived by the a-nalysis of factors on the conversion rate,and a method for the determination of ratio of phosphate ore incomplete decomposi-tion and available phesphate degeneration induced by sesquioxide was put forward,which provided a path for the predictionand adjustment of the process system.

对影响普钙产品转化率的各种因素进行了分析，利用MATLAB 软件包得到了转化率的计算公式，提出了确定未分解磷矿的比例和由倍半氧化物引起的有效磷退化幅度的方法，为生产系统的预测和调整提供了一种途径。

A formula for calculating of siltation of channel by effective energy of wind was obtained and the results were identical with the measured data of Huanghua Harbor.

得出了利用"有效风能"计算航道淤积的计算公式，并与黄骅港海区现场资料进行了验证和校核，效果良好。

In accord with the characteristics of singular integrals in boundary element method for solving problems of thick plates on two parameter foundation,all formulas for calculating singular integrals are set up by selecting the displacements and stresses which satisfy the governing differential equations in this paper,on the principle of virtual energy.

根据双参数地基上厚板弯曲问题边界单元法中所遇奇异积分的特点，选取满足该问题微分控制方程的位移及内力场，建立了全部奇异积分的计算公式，有效地解决了边界元法在该问题应用中高阶奇异积分的计算问题

Secondly, the properties of output sequences of stop-and-go clocked combiners are discussed. It is proved that the output sequences are stationary and obey strong law of large numbers and central limit theorem. Using the probabilistic model properly built, we analyze the rate of coincidence between the output sequences of two kinds of generators with basic operations and corresponding LFSRs sequences. All the computational formulae are derived. A recursive algorithm for efficiently computing the poster probability of partial input strings and corresponding joint probability is introduced. Moreover, divide-and-conquer attacks on this kind of generators which reconstruct the initial states of the input stop-and-go generators individually are proposed.

其次，分析了一般钟控停走组合生成器输出序列的概率分布性质，证明了生成器的输出序列是严平稳的，且服从强大数定律和中心极限定理；考察了钟控加法型组合生成器和钟控乘法型组合生成器的输出序列和相应的常规钟控下线性移位寄存器序列之间的符合率，给出了符合率的具体计算公式；给出了组合器输出序列段和输入序列段之间的联合分布以及部分输入序列段的后验概率的有效递归算法，进一步提出了利用后验概率对钟控组合生成器进行分别征服相关攻击的方法。

We construct a new shape function base on Taylor expansion and the origin of these problems and solve these problems successfully.

从无单元法中出现上述问题的根本原因出发，并利用泰勒展开公式构造出了新的形函数，有效地解决了上述问题。

Taylor formula for the basic idea is to use polynomials to approximate a known function, and the coefficients of the polynomial by the given function to determine the derivative , and this approach gives an effective estimate.

泰勒公式的基本思想是用多项式来逼近一个已知函数，而这个多项式的系数由给定函数的各阶导数确定，并对这种逼近给出有效地估计。

Analyzing the dependent failure and stepwise computing the reliability of a parallel system, the reliability model of cumulative fatigue damage of a load sharing parallel system is developed according to the total probability formula and Miner theory.

为了有效处理载荷共享并联系统的可靠性问题，首先分析了并联系统的相关失效，并分步计算并联系统可靠度，应用全概率公式和Miner理论对并联系统进行了疲劳累积损伤可靠性建模。

So that, we should do some effective transfor2 mation among these three systems, including time system and coordinate system. For the requirement, the time system and coordinate system for each of them are analyzed in details. And then, the method of time transformation and the model of coordinates transforma2 tion among GPS, GLONASS and GAL ILEO are p roposed based on lots of integration, certification and calculation.

这就需要我们对此三个系统的时间系统以及坐标系统进行有效的转换，本文就是基于这样的需求，详细介绍并分析了此三大系统中各自的时间系统与坐标系统，通过对多方资料的综合、推证与计算，综合得出GPS、GLONASS以及GAL ILEO三大系统间的时间转换方法及坐标转换模型与公式。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了