有效公式

In order to compute the voltages at the inaccessible nodes of decomposition, a formula that is suitable to linear networks is derived and the several kinds of method that are suitable to nonlinear networks are discussed.

本文讨论了不可及撕裂节点电压的计算，给出了适合线性子网络的计算公式；对含有非线性子网络的情况，提出了几种有效的计算不可及撕裂节点电压的方法。

The postbuckling behavior of a long rectangular plate with initial deflection under uniaxial compression is discussed based on the large deflection theory of thin plates.

本文应用薄板大挠度理论，对有初挠度的长矩形板在纵向压力作用下的屈曲后行为进行近似分析，推导出计算板的极限强度和有效宽度的理论公式。

The algorithm has the effective suppression of delayed convergence, so the satisfiability of formula can be assigned rapidly.

这种遗传算法有效地抑制了算法的延迟收敛，从而保证了为可满足性公式能够快速找到一个可满足性指派。

Compared with published experimental data in reference, the calculated results show that use of temperature coefficient of elastic modulus is valid to modify the empirical formula.

通过与文献中的实验结果对比得知，用材料弹性模量温度系数对经验公式进行修正是有效的。

At the same time, the cooperation of the multi-layer frame structure is researched with FEA when the pre-stressed threads are stretching, and the relationship between the beam of stretching layer and the beams of nearly layers is discussed. The layout effect of regular reinforcement in the beam on the pre-stressed effective quantities is also analyzed, and the elementary estimation formula of pre-stressing loss on the multi-layer frame is also deduced according to the pre-stressing loss of one-layer pre-stressed frame structure.

同时文中还运用有限元对多层框架结构在预应力张拉过程中，某层梁预应力的张拉与相邻层梁的影响关系和结构各构件的整体协同工作做了研究，分析了非预应力筋在梁中的配置对框架梁预应力有效量的影响；并且在一层框架梁侧限预应力损失的基础上，扩展了多层框架结构中侧向约束引起梁的预应力损失值的初步设计估算公式。

In chapter 3,we study some enumerative problems for 2-tournaments,find theformual for the number of valid score vector and the number for 2-tournaments in npoints,obtain the number of 2-tournaments with specified scores.

第三章讨论2-竞赛矩阵的若干计数问题，得到了n阶有效得分向量和n阶2-竞赛的计数公式；得到了具有特殊得分向量s的2-竞赛的数目〓，给出了{〓是强的}的最小值及〓最小时s的刻划；证明几乎所有的2-竞赛矩阵是不可约的。

The non-relativistic energies and wave functions were determined by Rayleigh-Ritz method. The relativistic effects, including the correction to kinetic energy, the electron-electron contact term, and the orbit-orbit interaction, Darwin term, and mass-polarization effect on the energies were calculated by using first-order perturbation theory. In order to obtain a more accurate result for the larger Z system, the quantum-electrodynamics correction should be included. This correction to energy can be evaluated for the valence electron by using a hydrogenic formula with an effective nuclear charge, Z. The ionization potential, the excitation energies and the fine structure split-tings for a lithium-like ion with higher nuclear charge (Z=26) were calculated.

非相对论能量用Rayleigh-Ritz变分法确定，包括动能修正、电子—电子接触项、轨道—轨道相互作用项以及Darwin项的相对论修正和质量极化项由全实加关联波函数的一阶微扰给出，量子电动力学修正由有效核电荷方法和类氢公式计算；给出了较高核电荷(Z=26)类锂体系1s^2nl组态的电离能、激发能和1s^2np组态的精细结构劈裂。

Hydraulic resistance coefficient formulas are derived according to a great number of flume experiments and relative theory analysis.

3通过系列水槽试验和相关理论分析，提出了十字片梅花加糙的有效水深和水力阻力系数计算公式。

However, because of the positive sequence of fundamental frequency, there are still some shortages for wavelet transform in the use of harmonic measurement of three-phase dissymmetrical system. A new approach of harmonic measurement based on Period-interleaving of MALLAT arithmetic for dissymmetrical system is put forward. Analysis and experiment based on TMS320LF2407 Digital Signal Processor are made. And the result of experiment reveals that the proposed method based on Period-interleaving is valid in the use of harmonic measurement of three-phase dissymmetrical system.

但是，目前小波变换在三相不对称系统的谐波检测中存在着无法分离基波正序信号的不足，本文就此提出了一种用于三相不对称系统的基于周期交错的小波MALLAT多分辨率分解的测量方法，详细介绍了该算法的原理、流程及计算公式，同时以TMS320LF2407数字信号处理器为核心建立了实验系统对该算法进行了实验，实验结果证明该周期交错－小波变换算法可以有效地检测出三相不对称系统中的有害电流。

A systematic study on computing the integral curvature line on NURBS surface is presented. Discrete normal is used to simplify calculation of the second fundamental form of the surface, resulting in accelerating the Euler iteration process in solving the differential equation of curvature line. Discrete points on the curvature line are then obtained and approximated by an explicitly presented B-spline curve on the NURBS surface using singular mixed interpolation and capable of controlling the error within a given tolerance.

对NURBS曲面的曲率线的积分进行了系统的公式推导，并利用NURBS曲面的离散法向量有效地简化了曲面第二基本量的计算，加速了Euler法迭代求解曲率线微分方程的过程；在求得曲率线上的离散点集以后，应用奇异混合插值技术，在可控精度内把曲率线用显式直接表示为位于NURBS曲面上的B样条曲线。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。