查询词典 variation method

The stretching influence on the near trusses should be considered when using the stretching-twice method, and the construction is hard to be controlled. The Harbin exhibition sports center with a 128m support span, attached to a deep design calculation of the super-large span prestress truss string structure, stretching once in tension bed method is brought forward for the bottom cable of the single truss string structure. From calculation research on the friction force between the tension bed and the truss string structure, the friction influence is considered for the displacement method of the middle of span, with the action of the fixed cable stress. This method, with vertical displacement of the middle of span as its main control target for prestress stretching, is successfully applied in the prestress stretching construction of the project.

二次张拉需考虑张拉对相邻桁架的影响，施工控制难度大，本文结合哈尔滨会展体育中心支座跨度128m的超大跨度预应力张弦桁架结构的深化设计计算，提出了单榀张弦桁架下弦拉索胎架一次张拉法施工方法，通过对张拉阶段胎架与张弦桁架间摩擦力的计算研究，定量索力下跨中位移法考虑摩擦力影响，以跨中竖向位移作为预应力张拉的主要控制指标，成功地完成了该工程预应力张拉施工。

Furthermore the author establishes mathematic models of frequency histogram method ,fuzzy classification method , fuzzy Synthesized evaluation method and grey classification method on the base of former researches.Secondly, the article analyses the related knowledge of GIS component technology, which includes the progress of GIS, component object model,distributed component model, the ComGIS product MapX and hierarchical models of MapX.

包括地理信息系统的发展、组件对象模型，分布式组件对象模型、ComGIS产品MapX和MapX的层状模型结构等，还对MapX提供的主要对象及对象集进行了分析。

In orde to obtain system optimization in high efficiency production and operation safety, the microcosmic problem of goaf treatment was brought into the creative design of mining method and the synergism of two problems was studied. Firstly, in view of the occurrence characteristics and mining conditions of catacalstic ore section of orebody No. 105 in Gaofeng mine in Guangxi province, considering the adaptability to different scale goafs in the ore section, based on mining environment reconstructing idea and continuous mining mode, a new mining method (mining environment reconstructing non-pillar sublevel-strip continuous mining method) was put forward. Then, some repr, esentative goafs were selected and their stabilities were calculated by discrete element method on the basis of differences of goaf scale, surrounding conditions and situ stress field. At last, the mining layout was adjusted on the basis of goafs stability analysis and the goafs were adjusted as a part of cutting engineering, blasting space or stope, so as to determine all kinds of goafs treatment schemes.

摘 要：为在生产高效和作业安全上取得系统整体最优，将碎裂矿段的空区处理微观问题纳入采矿方法创新设计宏观问题中，开展2种问题的协同研究：首先，针对广西高峰矿105号矿体碎裂矿段的赋存特点和开采技术条件，考虑对各种规模空区适应性，基于采矿环境再造和连续采矿理论，提出采矿环境再造无底柱分段分条连续采矿法；然后，根据采空区规模、围岩状况和原岩应力场等条件的差异，在所有采空区中选择具有代表性的空区，运用离散元程序对其稳定性进行计算分析；最后，在稳定性分析的基础上，灵活调整开采布局，将采空区调整为部分切割工程、自由爆破空间或采场，从而确定出各种规模空区的处理方案。

Three kinds of method about mix design of concrete were introduced,namely,linearity analytical method, infilled coefficient method and overall calculation method.

介绍了线性分析法、密实系数法、全计算法这3种混凝土配合比设计方法。明确了它们在实际工程中的应用，阐述了在工程中选用合适的混凝土配合比设计方法具有十分重要的意义

By means of comparison of three index non-dimension management methods such as ideal index value processing method, Z-Score method, and linear projection method, the method of linear pr...

采用该方法为对比分析自行火炮、牵引火炮和轮式车载火炮费用-效能分析提供了依据。

A novel least squares algorithm based on anti-WKB method and linear segment interpolation,which is called prediction-verification method, is proposed.This method takes the values calculated by anti-WKB and linear segment interpolation as approximation,then uses the least squares fitting,and after that compares the linear segment interpolation based on the anti-WKB method with it.

提出一种基于反WKB法与分段线性插值的最小二乘拟合方法来确定离子交换玻璃波导的横向折射率分布，它将反WKB法与分段线性插值所计算出的结果作为近似值，然后进行最小二乘拟合，并与基于反WKB的分段线性插值方法进行比较。

This paper introduce development of integrity monitoringtechnology on WADGPS, specify ERAIM method which apply Kalman filter , some other methods of integrity monitoring technology is gave at the same time, such as auxiliary RAIM method, mid-value select method and pseudo-satellite method.

介绍了广域差分GPS系统完备性监测技术的一些进展，详细叙述了应用卡尔曼滤波和观测值历史记录的ERAIM算法，同时也给出了完备性监测技术的其他一些方法，如辅助RAIM算法和中值选择法、卫星方法等。

On the basis of above studies, the thesis forecasts rural highway total scale using land quotiety method, the synthesizing-quotiety method, the population density of economic method and connectedness method. Through the forecasted mileages open to traffic, it gains county and village network scale of Henan province, and then forecasts the total scale of county and village highway network and the grade frame of every town or city in Henan province.

在上述研究的基础上，本论文采用国土系数法、综合系数法、人口经济密度法、连通度法对河南省公路网总规模进行了预测，并通过对河南省公路网通车里程的预测，得到河南省县乡道和村道的公路网规模，进而预测了河南省各市的县乡道和村道的规模，同时对河南省县乡道和村道公路网的等级结构进行了预测。

After years of research, direct method using transient energy function of power system has gotten important development, and has become the main method of time-fiend analysis. In chapter 2, basic theories of TEF method are introduced, and the EEAC method and its application in stability generator tripping control are discussed carefully. A lot of work still need to be done in order to make practical achievement.As a way to actualize this scheme, a new intelligent style under frequency and

多机系统频率动态过程是低频减载方案设计的重要依据，本文在原有线性化扰动模型基础之上，增加了发电机和负荷频率调节效应的影响，并进行了系统仿真研究**同时根据多机模型特点及仿真结果提出了一种基于多机系统的低频减载设计和整定新方案，与传统方案相比，该方案提高了低频减载性能及系统运行方式的适应性

This article described the language teaching method which for hundred years deaf school uses (sign language teaching method, spoken language teaching method, comprehensive junction conversion of sixteenths to decimal, bilingual double cultural teaching method) as well as the spoken language,...

本文描述了百年来聋校所采用的语言教学方法(手语教学法、口语教学法、全面交流法、双语双文化教学法)以及口语、手语的含义；调查了长春地区一所聋校低、中、高年级语文教学中教学语言使用的情况，并分析了一些教学现象；根据调查与分析，提出了一些具体可行的改进聋校语言教学的措施，分别为：教学语言在各年级段合理使用的措施，提高教师教学语言效率，充分发挥聋人教师的作用。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。