求积

Two types of new Abel differential equation are structured by method of variation replacement, variation position transformation and compound function derivation law.

借助变量替换法、交换变量位置法及复合函数求导法则，构造出两类新的 Abel型微分方程，论证它们的可积性，提供可积的判据，从而推广有关文献的结论，扩大微分方程的可积范围。

Using the definition, we can solve some simple qusetions of the convolution. Graphic solution methods are applicable to the convolution of the segmental functions.

利用卷积的定义可以解决比较简单的函数卷积问题，图解法则适用于求分段函数的卷积。

This thesis discusses the extrapolation and combination algorithms for solving Volterraintegral equation, especially, first kind weakly singular Volterra integral equations, the-oretically and methodologically.

本文首次从理论和方法上论述了解Volterra积分方程，尤其是第一类弱奇异Volterra积分方程的机械求积法及其外推和组合算法的可行性。

Transverse section al anatomy and clinical significance of the pterygopalatine space

方法选用成年尸体头颈部20例制成连续横断面，观察翼腭间隙及其结构的解剖学关系，利用游标卡尺及求积仪分别测量其长径、宽径和面积。

Some typical torsion problems of a cylinder involving a straight,kinked or curvilinear crack were calculated.The obtained results for the case of straight crack...

对圆弧裂纹、曲折裂纹以及直线裂纹的典型问题进行了数值计算，并与用Gauss_Chebyshev求积法计算的直裂纹情形结果进行了比较，证明了方法的有效性和正确性。

An important method for evaluating integrals is a change in variables .

求积分值的一种重要方法是变量代换法。

Because you can split a 256-level QAM signal into a 16-level ASK (amplitude-shift-keying) signal for the in-phase component and a 16-level ASK for the quadrature component, a symmetrical approach is feasible.

因为将256级QAM信号分离成同相成分的16级ASK信号和求积成分的16级ASK，对称的方法是可行的。

In the numerical method has many extrapolation algorithms, the Romberg squaring algorithm is one kind of commonly used extrapolation algorithm, it is one kind of sector divides in half the accelerating convergence method gradually.

数值方法中有许多外推算法，龙贝格求积算法是一种常用的外推算法，它是一种区间逐次分半的加速收敛方法。

The Romberg formula is a successful example of peecise solution,wish is worked out from linear combination few approximate solutins.

Romberg求积公式以精度高而著称，而且也是用几个粗造的近似值的线性组合得到较为精确值的成功典范，因而在数值积分中广为运用。

Report : Programming Environment : Newton MATLAB7 K polynomial interpolation procedures to achieve Romberg of Quadrature program Gaussian out PCA Elimination of the program.

详细说明：计算方法实验报告：编程环境：MATLAB7.0 牛顿K次插值多项式的程序实现龙贝格求积公式的程序实现高斯列主元消去法的程序实现。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。