查询词典 grid

To build a rational grid network, this paper analyzed several grid framework optimization methods especially the ant colony algorithm and regradation step-by-step algorithm.

为了构建一个合理的电网网架，本文对现有的网架优化方法进行了研究，重点分析了逐步倒推法和蚁群算法。

I intend to retrieve all grid work from others that have taken it, and request of the angelic kingdom that each portion of my field be rewoven as the grid work returns.

我意愿从拿走我晶格层的别人那里取回属于我的一切，并请求天使王国当晶格层回归时将我能量场的每一个部位重编。

As there is human DNA and grid work rewoven into the etheric grid work, the associated regions of the form can then become crystalline.

当人类的DNA和晶格层重编到以太晶格层中时，身体的相关部位将变成水晶体。

I intend to retrieve all grid work from others that have taken it, and request of the angelic kingdom that each portion of my field be rewoven as the grid work returns.

我意愿从拿走我晶格层的别人那里取回属于偶的一切，并请求天使王国当晶格层往返回时将我能量场的每一个部位重编。

In order to select optimal grid and good computation efficiency to recover the entire signal, aiming at the Ricker wavelet commonly used in forward modeling, we analyzed the alias and signal restoration problem in finite-difference method based on spatial sampling theorem and seismic wave traveling regulation in media with different velocity, to derive quantitative relationship among the modeling grid size, minimum velocity of model layer, and recovered main frequency of wavelet.

为了选择最佳的网格尺寸以及以最小的计算量完整地恢复出信号，针对地震波场正演模拟中经常使用的Ricker子波，根据空间采样定理和地震波在不同速度介质中的传播规律，分析了有限差分算法中的假频和信号恢复问题，推导出模拟网格尺寸、模型地层的最小速度和能够恢复的子波主频之间的近似定量关系，并用数值算例验证了这一关系。

This paper proposes a novel current control stratege to avoid this unstable. The grid current feedback is used controlled the power factor expediently, and a second differential link of grid current is designed to stabilize the system.

本文采用了一种新型的电流内环控制策略，该策略采取了电网侧电流反馈控制，能够方便的控制功率因数，在电流内环引入了电网电流二次微分来解决不稳定的问题。

In establishing the simulation model of urban waterlogging, the core component of the system, a created structureless irregular grid technology is adopted in accordance with the geographical feature of the city, in stead of the traditional regular grid method.

在系统核心环节―积水仿真模型的建立中，该项目突破了传统规则网格的划分法，而是根据城市地形地貌特点独创了无结构不规则网格技术。

We considered that the method of spherical surface waves raytracing basing on the grid combined the virtues of the grid method. It is precise and high efficient in calculating traveltime and raytrace. It is a perfect method of raytracing.

分析认为，基于网格的球面波波前射线追踪方法结合网格法的优点，在计算走时和射线路径时精确、高效，是一种理想的射线追踪方法。

According to the definition and the distribution of VSR's voltage space vector, the introduction of a rule-based SVPWM current control strategy, with non-fixed switching frequency and dual hysteresis loops, that obviously improves the performance of current control. Based on two kinds of control strategies of VSR under unbalanced grid condition, the introduction of a new VSR control strategy featuring undamped-oscillation that simplifies the controller structure and effectively improves VSR's performance under unbalanced grid condition. A systematic description of the state switching in trilogic PWM signal generation of threephase CSR by using the conversion between bilogic and trilogic switching functions.

作者在如下工作的基础上对PWM整流器的一些关键问题提出了自己的研究思路、观点和方法：根据PWM整流器网侧矢量关系，直观地描述了其四象限运行的基本原理及特征；定量分析了VSR、CSR的PWM换相过程及波形特征；引入等效变压器模型并详细分析了VSR、CSR基于d—q模型的动、静态特性；提出了满足四象限有功、无功运行指标时的VSR交流侧电感设计方法；并提出了依据控制系统跟随性和抗扰性性能指标设计VSR、CSR直流侧储能元件的参数计算方法；在研究了VSR电流控制策略基础上，提出了影响VSR电流控制的几个要素，并进行了定量分析；根据VSR空间电压矢量的定义及分布，提出了基于规则控制的不定频滞环空间矢量PWM电流控制策略，并由此提出了具有双滞环特性的不定频滞环优化SVPWM电流控制策略，有效地改进了滞环PWM电流控制性能。

Based on two kinds of control strategies of VSR under unbalanced grid condition,the introduction of a new VSR control strategy featuring undamped -oscillation that simplifies the controller structure and effectively improves VSR"s performance under unbalanced grid condition.· A systematic description of the state switching in trilogic PWM signal generation of three-phase CSR by using the conversion between bilogic and trilogic switching functions.· Referenced to the CSR"s trilogic PWM signal generation, an approach to achieve low-stress natural commutation of switching devices by reshuffling the vector composition sequence, resulting reduced switching loss.

在研究了两类电网不平衡时的VSR控制策略基础上，提出了一种新型的基于无阻尼振荡控制器的VSR不平衡控制策略，在简化控制结构的同时，有效地改善了电网不平衡时的VSR控制性能；·通过二、三值逻辑开关函数间的转换，系统地描述了三相CSR三值逻辑PWM信号发生中的状态切换；·结合三相CSR三值逻辑PWM信号发生规律，提出了通过调整矢量合成顺序而使功率管获得自然换相的低电压应力SVPWM控制，从而有效地降低了功率管的开关损耗。

I go to school at night.

我是上上学。

Clear Tip Nasal Aspirator: A soft time and gentle suction action makes removing excess mucus easy.

鼻吸明确提示：一个柔软的时间和温柔吸力行动使消除过剩的粘液容易。