查询词典 double integral

This thesis research the structure character of nuclear core and new direct current stream generator which has internal screw and double tubes in the integral nuclear power equipment.

本文主要根据一体化核动力装置一回路中的反应堆堆芯以及具有内螺旋双层套管的新型直流蒸汽发生器这两个设备的结构特点。

This "one one open sinister " thought is that an integral whole is double, if not preserving self , why talk accomplishes to some extent; When accomplishing to some extent, also need to think deeply that unceasingly how to preserve self.

这"一阳一阴"的思想是一体两面的，如果不保存自己，怎么谈有所作为；在有所作为时，也要不断思考如何保存自己。

Initial boundary value problem of two dimensional unsteady diffusion equations is solved in this paper. By using time-dependent fundamental solution of two dimensional diffusion equations and the extension of double layer potential, we establish virtual boundary integral expression of diffusion equations. Then virtual boundary element method is used to implement the numerical computation.

本文在求解二维非定常扩散方程的初边值问题时，利用二维扩散方程与时间有关的基本解，基于双层位势的延拓，建立二维扩散方程的虚边界积分表达式，然后利用虚边界元法进行数值计算。

Based on the Betti-Rayleigh dynamic reciprocal theorem, the reciprocal property of the Green function is demonstrated; and the analytical solution of soil vibration subjected to moving loads is deduced. By means of double Fourier integral transform, the problem is firstly transformed into wave number-frequency domain, which makes it very convenient to derive the solution and furthermore to analyze the frequency characteristics of soil vibration.

基于Betti-Rayleigh动力互易定理，论证了地基土Green函数的互易性，推导了移动荷载引起的地基土振动解析解，进而推证出移动常力荷载和移动简谐荷载作用下地基于表面振动在波数－频率域内和空间－时间域内的解析表达式，并采用Matlab对其进行数值计算。

Chaotic behaviors of integral and fractional order double Mackey-Glass time delay systems are studied by phase portraits and bifurcation diagrams.

本篇论文以相图及分歧图等数值方法来研究双Mackey-Glass系统的整数阶与分数阶的浑沌行为。

Other Titles: Chaos, Chaotization and Uncoupled Chaos Synchronization of Integral and Fractional Order Double Ikeda Systems

Title：整数阶与分数阶双Ikeda系统的浑沌，浑沌化及非耦合浑沌同步

The inversion of particle size distribution from measured data of light scattering, as a typical inverse problem, has been studied by many reseachers and solved by several numerical methods. Among which, direct Tikhonov regularization method with Morozov discrepancy principle, is often used to overcome the ill-posedness linked with the Fredholm integral equation of the first kind, so the stability of inversion has been heightened. But there has much room for improvement of the inversion accuaracy, especially for the double-peak problems.

由测量得到的散射光强数据来反演颗粒粒径分布是一个典型的反问题，它已为许多的学者所研究，并用多种数值方法来求解，其中带Morozov偏差原理的直接Tikhonov正则化方法经常被采用，以便用来克服与上述反演相联系的第一类Fredholm积分方程的不适定性带来的困难，因而反演的精度得到了提高；然而仍有许多改进的余地，特别是对于所谓"双峰"问题更是如此。

Secondly, we give rise to the new concept of double chord-power integrals of aconvex body, which considered the conclusion of geometric probability problem andthe concept and theory of chord-power integral.

接着考虑到上述几何概率问题的结论所用到的数学表达式和弦幂积分的一些相关概念和理论，引出了双弦幂积分这个全新的概念。

Wing wizard George 'Geordie' Armstrong was an integral part of our 1971 'Double' winning team.

乔治-阿姆斯特朗是1971年阿森纳获得双冠王最主要的人物。

We compared the number of integral membrane proteins identified from the PM of human CNE1 cells by PAOT with that of an optimized trypsin/chymotrypsin method. More than double the total number of identified IMPs was obtained with PAOT, mainly contributed by the IMPs with positive grand average of hydropathicity scores.Part 2: We describe a procedure for digesting the hydrophilic domains in the absence of detergents and denaturants.

同时，我们以人类CNE1细胞系为材料，比较了PAOT与另外一种优化好的胰蛋白酶/胰凝乳蛋白酶酶解方法，发现PAOT鉴定到的整合膜蛋白是胰蛋白酶/胰凝乳蛋白酶酶解的2倍，并且这些整合膜蛋白的疏水值大部分都为正值。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。