计算公式

Based on the parabola and catenary theories, calculation formulas on the cable length are summarized, and the precision is discussed.

以抛物线和悬链线理论为基础，总结推导了悬索索长的实用计算公式，对各公式的计算精度进行了分析。

Therefore, it is necessary to study these parallel problems. For the linear register systems, this paper presents a (1, N) parallel method with uniform calculating formulas by using the method of matrix equations, and studies to simplify XOR circuits. Comparing with the existing parallel methods for linear shift registers, this method for linear register systems doesn't need to expand the transition matrix, and has the same calculations for arbitrary N, which reduces the complexity.

对一般的线性寄存器系统，本文应用向量矩阵方程的研究方法提出了一种通用的、具有统一计算公式的(1， N)并行方法，研究了其中异或电路的化简，相对于已有的线性移位寄存器的并行方法而言，本文提出的方法不需要扩展矩阵，对任意的N计算公式均是统一的形式，减少了问题复杂性，具有更广泛的应用范围。

Based on failure model of brick masonry walls and truss bar model of fiber reinforced polymer, the formulas of shear capacity of brick masonry wall with pilaster strengthened with GFRP are established, which agree well with the experimental results.

基于未加固墙体的剪摩和剪压破坏模型和纤维复合材料的桁架受力模型，推导出在不同破坏形态下，GFRP加固带壁柱砖墙的抗震抗剪承载力理论计算公式。利用公式所得的计算结果与试验结果吻合。

By studying the present calculating formula of rectangular drawpiece blank size, this paper gains the major reason of inducting error,and obtains new more accurate formula,according to the same principal that surface area is equal before and after drawing.

对现有盒形拉深件坯料尺寸计算公式进行了分析，得出其误差存在的原因，并根据"坯料面积与拉深件面积相等"的原则得出了较为准确的盒形拉深件坯料尺寸计算新公式。

An improved median rank function obtained by genetic algorithms is presented to reduce the errors of rank assessment.

在总结了威布尔分析方法中应用较为广泛的几种中位秩计算公式的基础上，利用遗传算法对其一般表达式中的待定参数进行优化，进而提出了改进型的中位秩计算公式。

College of Electrical Engineering, Zhengzhou University摘要: In order to understand and calculate the reactive power of the nonsinusoidal electric circuit accurately and analyses the the influence of the reactive power in the nonsinusoidal electric circuit on reactive energy measurement .the calculation formula of the reactive power is concluded by means of the Fourier analysis method.

为了能够准确地理解和计算非正弦电路的无功功率，分析非正弦无功对无功电能计量的影响，本文采用傅立叶分析方法，导出非正弦电路的无功功率的计算公式，分析了公式中每一项的物理意义。

Finaly, the reliability of static ice force for different reccurrence periods is calculated by taking Schwarz formula as formula of calculating static ice force and results are simulated by Monte Carlo important sampling method.

最后，以Schwarz公式为静冰力计算公式，结合得到的冰厚和冰强度的概率分布，采用映射变换法进行不同重现期静冰力的可靠度分析计算，并用蒙特卡罗重点抽样法进行模拟。

It bases on engineering thermal calculation, uses the extensive applicable formularies, sufficiently considers the characteristics of working substances and system components in variation work conditions, uses more exactly sectionalize fitting equations.

本仿真模型建立在工程热力计算方法的基础上，采用工程中广泛应用的计算公式；充分考虑在变工况时各种工质物性和系统部件特性的变化，采用更精确的分段拟合公式。

This article expatiated on the structure and principle of coreless transformer in printed circuit board, introduced and analysed the Hurly_duffy's method to calculate the self and mutual inductance of coreless transformer in printed circuit board in which I found the fault, re-modified the current unit model, deduced a new formula used commonly, and offered testing process and circuit as well as mended the structure of coreless transformer which made the analysis easy.

本文阐述了无芯印制板变压器的基本结构和原理，介绍和分析了Hurly-duffy 的无芯印制板变压器自感和互感的计算方法，指出了它的不足，在纽曼公式的基础上，重新修正了电流元模型，将线圈看作是粗线圈，推导出普遍适用的计算公式，并给出了测试方法和测试电路。

This dissertation qualitatively analyzes the relation of load inductor equivalentresistance and inductance, the coil number N, the frequency of coil current f, themagnetoconductivityμr of the heated object and the semidiameter of the inductionheating coil r3. The conclusion can efficiently guide the dimension design and materialselection of the induction heating coil in engineering application.

推导了负载感应器等效电塑料托盘阻R和等效电抗X计算公式，并对其进行了仿真(采用ANSOFT MAXWELL 2D／3D有限元仿真软件进行仿真)和实验验证，仿真和实验结果表明本文推导的负载感应器数学模型正确，负载感应器等效电阻和等效电抗计算公式准确。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。