计算元件

The first one mainly introduced engineering calculate method of load and selected the all electric implements. They are in charge of the motor four rotation states, and the sensor is in charge of testing the position of helicopter airscrew and display by computer. The second one designed the controller of the motor based on low-voltage electric implement and analyzed the all system.

第一部分，主要介绍了负载参数的工程计算，选取整个系统的电气元件，电气元件部分主要负责双速电机的正向、反向和高、低速旋转状态，测速传感器用于完成对桨距位置的检测和最终的显示任务；第二部分，设计了基于低压电器的总桨距调节控制器，并对整个系统进行详细的分析。

Usually, distribution networks operate in arborescence mode, so in the simulation of fault analysis the impact of faulty switch element on system reliability is apportioned to failure consequences of adjacent sections that connect to switch, and then an equivalent analytical model considering switch fault is proposed. Thus, not having to conduct the reliability analysis of switch element singly, the impact of switch element fault on system reliability can be calculated. Applying the proposed algorithm in RBTS-BDS6 system, RBTS-BUS4 system and actual medium-voltage distribution network to conduct reliability assessment, the results show that the proposed algorithm is superior in speed and possesses efficiency and engineering practicality.

配电网常具有树状运行特点，在故障解析模拟时，将开关元件故障对系统可靠性的影响分摊到连接开关的相邻分块的故障后果中，进而提出计及开关故障的可靠性等值解析模型，不需单独进行开关元件故障的可靠性分析即可计算其对系统可靠性的影响，应用该算法对RBTS-BUS6和RBTS-BUS4系统及实际中压配电网进行了可靠性评估，结果表明该算法有较明显的速度优势，具有高效性和工程实用性。

And established the mechanics model,optimization parameter model,optimization mathematics model for the elastic element of the extensometer,programs analysis file and optim...

以应变计式引伸计弹性元件的结构优化为例，建立了引伸计弹性元件的力学模型、优化参数模型、优化数学模型，用ANSYS的参数化设计语言编制了分析文件和优化控制文件，经计算获得最优结果。

By using CFD software FLUENT,numerical simulation for the three-dimensional flow of air between honeycombed plate heat transfer component s is carried out.

应用CFD软件FLUENT对蜂窝板传热元件板间空气的三维流动进行了数值模拟。对中心间距为19 mm的蜂窝板传热元件在不同质量流量情况下的换热和阻力特性进行了计算分析，给出了在300

To calculate nonlinear transport of pulsed beams in the six dimensional phase space of solenoid lens accurately, a beam dynamics program has been designed using Visual Fortran 6.5 to calculate the beam optical system consisting of drift spaces and solenoid lenses.

为计算强流脉冲束在螺旋管透镜6维相空间中的非线性传输，用Visual Fortran 6.5语言设计了一个计算程序，计算由漂浮空间、螺旋管透镜等元件组成的束流光学系统。

By applying object-oriented analysis method, the device elements in power system are used as research objects in phase coordinates for network modeling and fault analysis. The symmetrical feature of power system elements is studied and optimized calculation methods for various application environments are developed.

本文以电力系统设备元件和网络节点为主要研究对象，利用面向对象的分析方法，在相坐标系下对网络建模和故障处理作了深入的研究；分析了电力系统元件的对称性，为各种不同应用环境研究了实用化的优化计算方法。

precise calculating formula is derivated to determine magnification ratio of voltage,input resistance and output resistance in amplifying circuits based on th feedback circuit model with cascade voltage.with th new calculating methods put forward by the author,it is possible to solve the problems in terms of calculation in amplifying circuits,the key problem being low level of exactness.the research shows the influence of components′ parameters of basic amplifying circuits and feedback circuits on feedback amplifying circuits.the results of the research may contribute to design amplifying circuits and electronic instrument with higher performance,due to the simpler calculation in the design of feedback circuit with cascade voltage.

摘 要：在建立电压串联反馈电路模型基础上，推导出放大电路中的电压放大倍数、输入电阻、输出电阻的精确计算公式。提出新的计算方法，从而解决了放大电路计算不方便，精确度不高、准确性不够的问题。同时进一步揭示了基本放大电路、反馈电路元件参数对反馈放大电路的影响关系。为设计出高性能放大电路及电子设备指明了方向，更加方便于电压串联反馈电路的计算。

When one of the four measuring components is roughly calibrated, the others can be calibrated precisely relative to the calibrated one. In this article we present the variation of stress and the equation of self-check of the reliability of the observed data.

在井下其中一个元件大体标定的情况下，对其他元件进行了相对精密标定，并给出了应力变化以及实现应力观测数据可靠性自校的计算公式。

The methods include: determining all elements' sensitivities to the sum of error functions, optimization sequence and direction of objective functions, eigenvalues and eigenvectors of Hessian matrix and the approach of stabilizing algorithm.

提出了计算功率GaAs MESFET小信号模型参数的一些改进方法，包括计算Hesse矩阵本征值和本征向量，确定各元件对总误差的敏感度、目标函数的优化顺序和优化方向，以及稳定的计算方法，计算结果与器件的测量值吻合。

Using the opened thermosiphon of 38x3 as experimental element and water as working fluid,the characteristics of dynamic low load boiling,stable severe boiling heat transfer coefficient and critical heat flux are gotten for the opened thermosiphon at the pressure of 0.02-0.1MPa and 0.1-0.8MPa respectively,which makes up the drawback that the opened thermisiphon has not yet accurate boiling heat transfer relationship formulas.

本文以工程上常用的Φ38×3的开口封底为实验元件，以水为工质，对开启式热管内的动态低负荷沸腾、稳态旺盛沸腾及临界沸腾特性进行系统的可视化实验研究，实验压力为0.02～0.8MPa，实验得出了Φ38×3的开口封底管在工作压力为0.02～0.8MPa和0.1～0.8MPa下的管内沸腾传热系数及临界热负荷计算关联式，弥补了开口封底管——这一新型传热元件尚无准确的沸腾换热关联式的缺陷。

Life. But the intrinsic way of the Internet by wire confines accessing and using of the network information.

然而，Internet固有的有线连接方式大大限制了人们对网络信息的访问和使用。

I have a strong persuasion that this is true .

我坚信这是正确的。