查询词典 calculation of areas

In order to look for fast calculation model of a linear oscillation motor, which can express the transitive relation between parameters and performance. The basic mathematic model of a linear oscillation motor is established by finite analysis method and the regression modeling method for the support vector machines is introduced. Then, the SVM calculation model is set up. A shortcut online calculation method is provided for the process of the parameter optimization of linear motors.

为了寻找反映直线振荡电机参数与性能输入输出传递关系的快速计算模型，利用有限元分析法，建立了直线振荡电机非参数建模的基本数据计算模型，根据基本数据计算模型，引入支持向量机(Support Vector Machines， SVM)非参数回归建模方法，建立了用于直线振荡电机参数与性能之间输入输出传递关系的SVM计算模型，为电机参数优化过程提供了方便快捷的在线计算方法。

The wind tunnel experiment,project argument,structure calculation analysis, calculation of the joint bearing capacity, calculation and experiment of the support-joint load carrying capacity of a super-span stretched stereoscopic steel pipe trussing are introduced- A normal usage period of the project after it had been built indicates that the major trussing and the supporting structure below have enough bearing capacity and deformability, and meet the demands of design code and actual usage.

摘要］介绍了某超大跨度伸臂立体管桁架结构的风洞试验、方案论证、结构计算分析、节点承载力验算、支座节点承载力验算和试验等。该结构建成后一段时期的正常使用表明，工程的主体桁架和下部承力结构具备较强的承载变形能力和可靠的安全度，满足设计规范和实际使用要求。

3 The difficulties if the curriculum: internal force calculation of combined structures; virtual work principle and displacement calculation ; displacement method; analysis of structural matrix analysis; dynamic calculation.

本课程难点：静定组合结构的内力计算，虚功原理和结构位移计算，力法，位移法，结构矩阵分析，结构的动力计算。

In this research, Delphi language is adopted to work out calculation procedure of coal-pulverizing system, use this procedure to perform checking calculation, and act as the theoretic basis of operating adjustment. The operation characteristics and controllable parameters are completely studied to reduce the cost. The double-stage separating technique is adopted to improve separation efficiency. The pulverized coal exhauster is reformed based on the outcome of resistance calculation to save power consumption of pulverized system. The wearing problem of steel balls is studied, has set up the stable state mathematics model of steel ball wear to certain load ball system and addition ball system.

本课题采用Delphi语言编制了制粉系统计算程序，用此程序对该制粉系统进行了校核计算，作为制粉系统优化调整的理论根据，从中储式制粉系统的运行特性、可控参数方面进行了全方位的研究，采用内筒中增设螺旋隔离分离元件的双级分离式细粉分离技术，提高细粉分离效率，根据制粉系统阻力计算结果对排粉机进行改造，减少制粉电耗。

In the paper, we adopt the analytical method concluding the theoretical research and experimental research to create the P-Y curve calculation model that is described by a series of geotechnic parameters such as the unconfined compressive strength, natural gravity and the compression coefficient in the shallow layer of the clay soil . The calculation example indicates that the calculation value of the pile moment of flexure of the body and the peak displacement agree with the measured value.

本文采用理论研究与实验研究相结合的分析方法，建立了以土工参数q_u、r、a_v等描述的浅覆盖层中粘土的P-Y曲线计算模型，计算实例表明桩身弯矩和桩顶位移的计算值与实测值符合良好。

Through the comparison of calculation results of two methods in the uniform and the non-uniform inflow, it is found that the results by two methods are very close. The calculation results by two methods are compared with open water test, and the agreement is well. The two methods can both perfectly simulate the hydrodynamics performance of podded propeller, and the method of induced potential needs less program work and can save a great deal of calculation time and memory space. It is a simpler and effective method to calculate hydrodynamics performance of podded propellers and other combined propulsions.

经过用两种方法对均匀来流和非均匀来流条件下水动力性能的计算比较，发现两种方法的计算结果很接近，并与模型试验结果吻合得很好，但用诱导速度势的方法编程工作量较诱导速度方法少，而且还可节省大量的计算时间和存储空间，是一种计算吊舱推进器和其他组合推进器水动力性能相对简单而且有效的方法。

The general decoding method for Turbo codes provided by the invention adopts enhanced Max-Log-MAP algorithm, makes use of Max-Sum semiring property in the generalized distribution law and combines and simplifies measure and calculation of forward and backward status of traditional binary Turbo codes, which means combining grid graph of traditional binary Turbo codes in nature to ensure that the status measure and calculation of the traditional binary Turbo codes have the same calculation expression way with that of the duobinary Turbo codes so that a general decoding device can both decode the traditional binary Turbo codes and duobinary Turbo codes.

本发明提出的Turbo码通用译码方法采用增强型Max-Log-MAP算法，利用广义分配率中的Max-Sum半环性质，对传统二进制Turbo码的前向和后向状态度量计算进行合并简化，从本质上也就是对传统二进制Turbo码的网格图进行合并，使得传统二进制Turbo码的状态度量具有和双二进制Turbo码一样的计算表达方式，从而使得通用译码装置对于传统二进制Turbo码和双二进制Turbo码都可实现。

In order to provide a simple and convenient method of earthwork volume calculation in the work of terracing the land on hillside,a formula for earthwork volume calculation was developed using the methods of literature consultation and geometrical mathematic calculation.

为西南丘陵地区土地开发整理坡改梯坡式梯田土方量计算提供科学简便的计算公式和计算方法，为工程项目审查及预算审查提供坚实的依据。通过运用文献研究和几何数学方法，推导出坡改梯坡式梯田土方量的计算公式。

It is found that, the calculation results from formulas specified in GB50010-20 agree with the test results on uncracked prestressed concrete beams to great extent, and formulas specified in AC1318-99 are more suitable for calculation of those postcracked prestressed concrete beams, but formulas in both codes are not ideal for the calculation when loads near the crack ones.

结果表明，GB50010-2002规范公式的计算结果与梁未开裂时的试验结果比较吻合，ACI318-99的计算公式对开裂后的计算相对准确，但两种规范对处于开裂荷载附近的计算均不是很理想。

Shim current calculation When shim coils are excited by appropriate current, they can generate correcting magnetic field to compensate the imaging magnetic field unhomogeneity. Based on the indirect calculation method, we proposed a novel iterative optimization algorithm to calculate shim current. Because there is a direct proportion relationship between FID signal and magnetic field homogeneity, we use the intensity of FID signal as feedback information to the calculation. Shim current can be worked out in less than 3 minutes. This satisfied the requirement that active shimming should be performed in real time.

5匀场电流计算对匀场线圈施加适当的电流后才能产生校正磁场消除成像磁场的非均匀分量，本文在匀场电流间接计算方法的基础上，利用磁共振成像原理中磁场均匀性与系统FID信号强度成正比的关系提出了一种电流迭代优化算法，将系统FID信号强度的变化作为反馈信息，能够快速计算出匀场电流对成像磁场进行补偿校正，平均耗时不到三分钟，满足磁共振成像系统对有源匀场的实时性要求。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。