查询词典 perturbation parameter

This invention provides an on-line analysis method and system for combined gas and steam cycle power station's efficiency, which comprises an on-site data-collecting unit, used to check the sub-devices state parameter in power station; a data base server linked to on-site data-collecting unit to stored the state parameter provided by data-collecting unit; modular arithmetic server used to calculate the gross operation efficiency of power station based on the data base state parameter and the influence degree caused by sub-devices property to the gross operation efficiency; client device to receive command input by clients and output the calculating result by modular arithmetic server.

本发明提供一种燃气―蒸汽联合循环发电站运行效率的在线解析方法和系统，在线解析系统包括：现场数据采集单元，用于测量电站各分设备的状态参数；与现场数据采集单元相连的数据库服务器，用于存储现场数据采集单元测量得到的状态参数；模型运算服务器，其根据从数据库提取的状态参数并计算电站的总运行效率和当前状态下电站各分设备性能对电站总运行效率的影响程度；客户机，其接收用户输入的命令并输出模型运算服务器的计算结果；网络，其将数据库、模型运算服务器和客户机连接在一起。

To demonstrate the effects of vibrating intensity parameter and model parameter, the curve of the shear stress distribution was made according to different parameter.

结果表明：在环形流道中，流体的应力是半径和时间的函数，剪切应力与时间成余弦关系。

The soil parameter is the basic parameter in the soil engineering design, but the variety of soil parameter have the very strong region characteristic.

岩土参数是岩土工程设计的基本参数，而岩土参数的变化具有很强的地域特征。

The invention discloses a passive optical network signal monitoring method comprising the following steps: obtaining a PON signal from one side of an optical line terminal and an optical network unit, detecting the photoelectric property parameter of the obtained PON signal and judging whether the detected photoelectric property parameter lower than a predeterminate photoelectric property parameter threshold or not, if it is, a corresponding alarming signal is transmitted to the OLT.

本发明公开了一种无源光网络信号监控方法，包括以下步骤：获取来自光线路终端和光网络单元中一侧的PON信号，检测所获取的PON信号的光电性能参数；和判断所检测出的光电性能参数是否低于预设的光电性能参数阈值，如果是，则发送对应设置的告警信号给所述OLT。

Parameter estimate lays particular emphasis on individual population parameter of model in the past. Its common purpose aims at seeking one method to optimize parameter in the equation.

以往参数估计研究都侧重于单个种群模型中的参数确定，其共同的目的旨在寻求一种使方程中参数达到最优化的方法。

According to each joint motion parameter, the manipulators position and pose can be solved, as well as according to the specified relevant position and pose parameter, each joint motion parameter can be solved.

根据各关节的运动参数，求解机械手的位置和姿态；以及根据给定的相关位置和姿态参数，求解各关节的运动参数。

Secondly by using the real parameter complex variable error model and its parameter adjusting algorithms developed in this paper, some new parameter identification methods that can be used in the variant speed driving condition are proposed.

其次，应用本文得到的实参数复变量正实误差模型条件下的参数调整算法，给出了2种新的变速驱动时感应电动机定转子参数的辨识算法，它们可以在交流传动系统的参数自适应设计问题中得到应用。

For the sake of the image reconstruction efficiency we shortened the reconstruction time almost 100 times by parameter table method. In algebra iterative algorithm we found the range of relaxation parameter is very different. The range of relaxation parameter of ART was narrower than that of SIRT. Different methods of data access will influence on the quality of reconstruction image.

在代数迭代算法中，通过模拟图像的重建发现，ART算法和SIRT算法松弛因子的选择有很大的不同，SIRT的松弛因子选择范围偏小，而ART的松弛因子选择范围要宽得多；数据访问方式的不同，对重建的图像有一定的影响；提出了最优迭代次数的判据，避免了在迭代时迭代次数选取的盲目性。

By analyzing of materials parameters, Some conclusions can be reached as the mode Ⅰ dynamic stress intensity factor and energy release rate increases with decreasing shear relaxation parameter, and decreases with decreasing swelling relaxation parameter, however elastic parameter have little influence on it.

通过对材料参数的讨论，得到动应力强度因子和能量释放率随剪切松驰参量的减小而增大，随膨胀松弛参量的减小而减小，弹性参数对其影响较小。

Calculating results show that variation of the propellant inlet pressure makes little impact on engine performance parameters, and the engine will transit to a new stable state. The parameter transition curves are smooth. When the engine thrust is adjusted in a small range within a short period, the parameter transition curves are also reposeful. But when the adjusting range becomes large, the parameter transition curves will fluctuate acutely. Thus, when large range adjusting is required, the time of adjusting should be lengthened or the adjusting should be divided into adequate steps.

计算结果表明，当发动机在某一个稳定工况工作时，发动机入口推进剂压强的变化对发动机性能参数的影响不大，发动机的参数都能比较平稳的过渡到一个新的稳定工况；当发动机在短时间内进行小范围的推力调节时，发动机参数的过渡过程的曲线也比较平稳，但是当在短时间内进行大范围推力调节时，参数的过渡过程的曲线振动比较剧烈，因此应当在进行大范围推力调节时，应当对调节时间进行适当延长，或者分级进行推力调节。

I want to be a big fish in a small pond.

我要做一条在小池塘里的大鱼。

While the software functioned well, we did not feel the same about their customer support!

虽然该软件运行良好，我们没有同样的感觉他们的客户支持！