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  branch
    Analysis of Electric Machine's Operation after the Open of One Branch of 2Y-Windings
    2Y接绕组某相一路断线后电机运行分析
短句来源
    It mainly introduces Jinzhong electric power supply branch company making use of optical fiber channel to realize interconnection between the lines of company branches,aiming to raise the real-time character,dependability,continuity of data gathering,so as to realize the resources sharing ability and some prospects of its applications.
    主要介绍了晋中供电分公司为提高数据采集的实时性、可靠性、连续性,实现资源共享,利用光纤通道实现各公司局域网之间互联及应用前景。
短句来源
    The charger adopts GMS97C2051 as the programming controller whose inner comparable apparatus works as cell detection with high temperature,constant voltage and current,circuit of voltage detection and basic circuit of voltage resource are composed by an LM324,a TL431 and several branch components.
    充电器采用单片机GMS97C2051作编程控制器,其内部的比较器用作电池高温度检测,用一片LM324和一TL431以及若干分立元件构成恒压———恒流电路、电压检测电路、基准电压源电路.
短句来源
    Increasing the Number of Symmetric Branch of Hydrogenerator by Using Single Bar Connection
    用单根线棒连接法增加水轮发电机可选的对称路数
短句来源
    A Method of Short-Circuit Branth Line Identification on Branch Type Transmission Network
    树型传输网的短路故障分识别法
短句来源
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  branches
    It mainly introduces Jinzhong electric power supply branch company making use of optical fiber channel to realize interconnection between the lines of company branches,aiming to raise the real-time character,dependability,continuity of data gathering,so as to realize the resources sharing ability and some prospects of its applications.
    主要介绍了晋中供电分公司为提高数据采集的实时性、可靠性、连续性,实现资源共享,利用光纤通道实现各公司局域网之间互联及应用前景。
短句来源
    The Independent Nodes and Tree Branches
    独立节点和独立树
短句来源
    Second, four practical control methods of adjustable reactors with high voltage and large capacity are studied in the paper while reducing production cost and restraining harmonic waves are taken into account. The first is the compensation technology by injecting current into the multiple branches of the reactor secondary. And the second is a method of controlling current available to a power switch devices with low frequency but large power or high frequency but small power.
    其次从降低实现成本和抑制低次谐波出发,本文研究了实现高压大容量连续可调电抗器的四种实用电流控制技术,包括电抗器二次侧多路电流补偿技术,电抗器二次侧多路低频大容量与高频小容量开关器件的联合电流控制技术,逆变器级联电流控制技术和移相SPWM 电流控制技术。
短句来源
    The q-axis and d-axis reactance, in which is parallel structure with several branches, is studied by analytical method.
    利用解析法对永磁体和铁磁体多路并联磁路的交、直轴电抗进行了推导,给出了满足工程设计精度的计算方法。
短句来源
    Formulating the Z-bus equation and its modifications for large power networks is facilitated by the modification of bus-current sources presented in this paper. All of the networks associated with changes of the topology structures and parameters can be treated adding a group equivalent link branches z eq to the original network.
    本文提出的采用修正节点电流源的方法形成和修正大型电力网络的节点阻抗方程,对伴有拓扑结构与参数变化的网络,通过向网络接入一组反映网络变化的等值链Z_(eq)修正节点电流源,具有统一的计算公式。
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  supported
    real compactly supported biothogonal wavelet is used for analysis of stator current and the fault is locked with wavelet-threshhold mothod;
    采用双正交紧小波分析定子电流,用小波阈值法闭锁发电机机端与主变高压侧发生短路的情况;
短句来源
    As an example, the method is applied to calculate the nature frequencies of metal thin rectangular plate with two opposite edges simply supported and the other two edges clamped in transverse magnetic field.
    作为算例,应用该互等定理计算了在横向磁场中两对边简和另两对边固定金属薄矩形板的固有频率。
短句来源
    The thesis, based on existing researches, tries to e xplain our research to design complex compactly supported biorthogonal wavelets by real compactly supported biorthogonal wavelets, and then explore the features of the extraction of partial discharge signal based on complex wavelets obtaini ng the general particular feature information from original signal, and finally propose ten novel complex information by combining the results of complex wavele t transform to analyze PD signal.
    在已有文献研究结果的基础上 ,采用仿真与实验相结合的办法 ,先将时域正交紧实小波生成正交紧复小波 ,来研究复小波提取信号信息特征的特点 ,然后利用新生成的复小波的分析结果构造了十种新的、可供选择的综合信息 ,用于局部放电信号分析。
短句来源
    A practical method using Daubechies compactly supported orthogonal wavelets to derive complex wavelets is proposed. The application of these complex wavelets in short duration power quality disturbance (SDPQD) detection is presented. Integrating phase information of disturbance signals provided by the complex wavelets transform, some new combined information is constructed.
    在分析比较了现有用于短时电能质量扰动检测的方法后,研究了用正交紧复小波进行检测与抑制噪声的原理,提出用Daubechies正交紧实小波派生其复小波的实用方法,并结合复小波变换提供的相位信息构造了多种新型复合信息形式。
短句来源
    For the Daubechies N wavelet series,it is indicated that the frequency band energy (FBE) of the signal in its own frequency band increases conformably with the increase of the parameter N. The lengthof the compactly supported set increases with the increase of the parameter N. This results in that the calculating time of the wavelet algorithm increases with the length of the set in direct ratio.
    针对 Daubechies Ⅳ小波系列,指出了信号所在频带的能量随参数 N 一致递增,但 是紧集长度增长,从而导致小波算法的执行时间与其长度成正比增加。
短句来源
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  branch
A branch-and-price algorithm for solving the cutting strips problem
      
After giving a suitable model for the cutting strips problem, we present a branch-and-price algorithm for it by combining the column generation technique and the branch-and-bound method with LP relaxations.
      
The double points may be the double points of either branch, or the intersection points of the two branches.
      
When the thickness is d >amp;gt; 2 Rg (radius of gyration), the polymer can crystallize into spherulites; when Rg >amp;lt; d >amp;lt; 2 Rg, a dense-branch morphology and dendrites could be found; when d >amp;lt; Rg, an "islands" structure could be obtained.
      
In addition, considering the non-convex and non-concave nature of the sub-problem of combinational optimization, the branch-and-bound technique was adopted to obtain or approximate a global optimal solution.
      
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  branches
In signal processing, communications, and other branches of information technologies, it is often desirable to map the higher-dimensional signals on Sn.
      
Its basic step is to divide the plane into subdomains that include only simple branches of the algebraic curve without singular points.
      
Each of the branches is then stably and efficiently traced in the particular subdomain.
      
The link curve of a spherical four-bar mechanism can be separated into two branches.
      
The double points may be the double points of either branch, or the intersection points of the two branches.
      
更多          
  supported
This fact is deduced from results about equivariantD-modules supported on the nilpotent cone of.
      
Given integers n,d,e with $1 \leqslant e >amp;lt; \frac{d}{2},$ let $X \subseteq {\Bbb P}^{\binom{d+n}{d}-1}$ denote the locus of degree d hypersurfaces in ${\Bbb P}^n$ which are supported on two hyperplanes with multiplicities d-e and e.
      
Smoothing Minimally Supported Frequency Wavelets: Part II
      
The main purpose of this paper is to give a procedure to "mollify" the low-pass filters of a large number of Minimally Supported Frequency (MSF) wavelets so that the smoother functions obtained in this way are also low-pass filters for an MRA.
      
Smoothing minimally supported frequency wavelets: Part II
      
更多          
  ramus
Notfallm??ige Stent-Implantation in dem Bereich einer ausgedehnten Muskelbrücke des Ramus interventricularis anterior nach posti
      
Bei einem 64j?hrigen Patienten mit progredienter Angina-pectoris-Symptomatik zeigte die koronare Angiographie eine Muskelbrücke im Ramus interventricularis anterior.
      
Akuter Myokardinfarkt bei Muskelbrücke des Ramus interventricularis anterior: Komplizierter Verlauf mit Gef??perforation nach St
      
Eine dringlich durchgeführte koronarangiographische Untersuchung zeigte einen proximalen Verschlu? des Ramus interventricularis anterior (RIVA).
      
Das Infarktgef?? war in 43% der Ramus interventricularis anterior, in 37% die Arteria coronaria dextra, in 16% die Arteria circumflexa, in 2,3% ein Bypassgef?? und in 1,4% der Hauptstamm der linken Koronararterie.
      
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  其他


This paper presents two kinds of small convertor for 48V direct current fluorescent lamp used in passenger train. Each kind contains one silicon transistor, which can light up two commercial fluorescent lamps each of 15W connected in series, can start rapidly without ballast and starter, and can operate with high efficiency and tolerate to appreciable flutuation of voltage up to 25% of normal value. These convertors are designed to be made as easily as possible. Their transformer core is made by ordinary laminated...

This paper presents two kinds of small convertor for 48V direct current fluorescent lamp used in passenger train. Each kind contains one silicon transistor, which can light up two commercial fluorescent lamps each of 15W connected in series, can start rapidly without ballast and starter, and can operate with high efficiency and tolerate to appreciable flutuation of voltage up to 25% of normal value. These convertors are designed to be made as easily as possible. Their transformer core is made by ordinary laminated steel. The rating of transistor is decreased by two means, one of which is preheating the heater of lamp with low voltage source and the other is using the reflector of light as ignitode, so thus the whole convertor is minimized both in size and weight.

本文介绍两种旅客列车用48伏直流日光灯小型变换器。每个变换器只用一硅三 极管采用灯管串联电路可带动两15瓦普通日光灯管,不要镇流器与启辉器快速启动; 效率高,有一定抗电压波动能力。在设计上考虑到推广方便用硅钢片作变压器铁芯,应 用低压灯丝予热和反光板兼作引燃电极两项措施降低了对三极管容量的要求,使全机小 型化,轻量化。

An estimate of the radial temperature non-uniformity (gradient) effects on the cryogenic thermometer calibrations is often required in order to make sure of the total uncertainty. A method of determining such effects is presented. For two resistance thermometers of the same type, the necessary condition of zero gradient effects is that the ratio of their resistances remains unchanged throughout the test in spite of the temperature fluctuations of the comparator block; whereas the sufficient condition is that...

An estimate of the radial temperature non-uniformity (gradient) effects on the cryogenic thermometer calibrations is often required in order to make sure of the total uncertainty. A method of determining such effects is presented. For two resistance thermometers of the same type, the necessary condition of zero gradient effects is that the ratio of their resistances remains unchanged throughout the test in spite of the temperature fluctuations of the comparator block; whereas the sufficient condition is that there are no constant synchronous temperature differences between the thermometer sites. The gradient effects can be obtained, therefore, from the deviations of the measured data from these two conditions. An example is given. Discussions are made on the experimental factors.

在分析低温温度计的校验误差时,需要估计温度不均匀性的影响.本文提出一个估计这种影响的方法.若使用同一型号的两电阻温度计进行测试,则径向温度理想均匀的必要条件是两温度计的电阻比不因温度起伏而变化,充分条件是两温度计所处部位之间无同步温差.分析测试数据对这两个条件的偏离,就可以估计出温度不均匀性的影响.文中给出方法应用实例,并对实验条件进行讨论.

In this paper, the various states of double-circuit transmission lines with uniform mutual inductance, which are often encountered in clculation of faulted power systems (for example douole-circuit transmission lines with mutual inductance coupling being removed or added simultaneously, one of them being added or removed, both terminals for one of them being connected to the earth under reparation, any point being faulted on any one of the lines, and one of the lines being opened at one of its terminals), are...

In this paper, the various states of double-circuit transmission lines with uniform mutual inductance, which are often encountered in clculation of faulted power systems (for example douole-circuit transmission lines with mutual inductance coupling being removed or added simultaneously, one of them being added or removed, both terminals for one of them being connected to the earth under reparation, any point being faulted on any one of the lines, and one of the lines being opened at one of its terminals), are transformed respectively into an equivatlent circuit without mutually coupled branches. The changes in each state can be transformed into changes of its equivalent circuit parameters and/or a new bus which appears on a branch of its equivalent circuit. The Z'-Bus matrix after these line changes can be found directly from branch impedance data of mutually

本文将电力系统故障计算中常见的两回并联的均匀互感线路的各种状态(两回并联互感线路同时接入网络或从网络断开,其中任一回线的接入、断开、检修时两端接地,任一回线上的任意点发生故障,任一回线的一端断开),分别处理为等效的无互感电路,把互感线路状态的变化变为其等效电路阻抗参数的变化或等效电路路上出现的新节点,利用网络增接无互感链的修正算法与路上任意节点阻抗元素的算法,直接从互感线路的阻抗参数和状态变化前的网络节点阻抗矩阵z,可迅速得出状态变化后的网络节点阻抗矩阵Z'。本文所提出的算法具有统一的计算公式,较现有其它方法简便,计算速度快,简化了互感路电流的计算。本文给有算例。

 
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