A method of signal time-frequency representation with phase factor is introduced.
描述了一种带相位因子的时频分析方法。
A new geometric phase factor is defined for any cyclic evolution of a quantum system.
一个新的几何相因子被定义为任意一个量子系统的循环演化。
This paper discusses the composition of the efficiency, so the phase factor defined and its mathematical expression derived.
本文在讨论其效率因子组成的基础上，首先定义了这一因子，并导出其数学表达式。
The negative effect produced by ionization of the dielectrics is reduced with the phase factor of alternating electric signals.
利用交变电信号的相位项，降低由电介质电离而产生的负效应。
The physical phenomena concerning with the gauge field are most completely and exactly described by non-integrable phase factor.
因此不可积相位因子最完整地描述了与规范场有关的物理现象。
Compared with the parabolic reflector, a phase factor is of most importance in the efficiency evaluation of Fresnel zone phase-corrected plate (FZP) ones.
同抛物面反射器相比，菲涅尔区相位修正平面反射器的相位效率因子对天线效率的影响显著。
S-transform has muti-resolution overcoming single resolution of short-time Fourier transform. Otherwise, S-transform contains phase factor which wavelet transform has not.
变换具有多种分辩率，克服了短时窗傅立叶变换固定分辩率的不足：另外，S -变换中含有相位因子，这是小波变换所不具备的特性。
It is justified that the integral of the gauge potential along path of not only electron but also scalar particle or spinor particle will contribute a geometric phase factor.
证明了规范场不仅沿入射电子在复连通区域运动路径的积分，而且还可沿入射标量或其他旋量粒子之一在复连通区域的运动路径积分，各自都将贡献一几何相因子。
Some applications, including the Aharonov-Bohm effect, are considered for the special case of adiabatic evolution, this phase factor is a gauge-invariant generalization of the one found by Berry.
一些应用，包括AB效应，被认为是绝热演化，即由Berry发现的、作为一个规范不变量的推广的相因子的特殊情况。
This will become an important factor when we consider measurement in the Construction phase.
当我们在构建阶段考虑度量方法时，这将成为重要的因素。
And at the moment Romney has the fervor [excitement] factor over Obama, but Obama has the ground game over Romney so that makes for a very interesting final phase.
目前，罗姆尼在兴奋因素上超过奥巴马，但奥巴马在基础上胜过罗姆尼，这使得最后阶段非常有趣。
This paper introduces a scheme in which a complex programmable logic device (CPLD) is used in the three phase three pole switch high rating factor convertor to realize logic control.
介绍了在三相三开关高功率因数变换器中应用复杂可编程逻辑器件(CPLD)实现逻辑控制部分的方案。
Among the three-phase power-factor correction circuits, the full decoupling circuit is especially suitable for high power fields because of its high input power and good electrical performance.
在三相功率因数校正电路中，全解耦型电路由于其输入功率大，电气性能较好等优势特别适用于大功率场合。
The electric current and voltage are close to the phase after compensating, namely the power factor is close to 1, so the purpose of dynamic var compensation is achieved.
由于补偿后的电流与电压在相位上接近，即补偿后的功率因数接近1，所以达到了动态无功功率补偿的目的。
In modern radar and communication system, phase noise of local oscillator (lo) becomes a vital factor of system performance.
在现代雷达和通讯系统中，本振相位噪声越来越成为决定系统性能的关键因素。
Zero current transition (ZCT) topology of the single switch three phase boost power factor correction (PFC) rectifier is proposed.
提出了一种零电流开关结构的单开关管的三相升压功率因数校正整流器。
Objective To observe the phase changes in the expression of leukemia inhibitory factor(LIF) in pancreatic tissues in rats with severe acute pancreatitis(SAP) and the significance.
目的观察重症急性胰腺炎（SAP）大鼠白血病抑制因子（LIF）在胰腺组织中表达的时相变化，探讨LIF在SAP病程中的意义。
It analyzes the circuit principle of the system, amplitude control method, phase control method and realization of the power factor control.
分析了系统的电路原理、幅值控制、相角控制及功率因数控制的实现方式。
A new and practical power factor control strategy for three phase PWM current source rectifier was proposed.
提出了三相电流型PWM整流器的一种新型实用的功率因数控制方法。
There are many uneven factor in the phase space of multi-particle.
末态粒子相空间存在着各种非均匀因素。
The conclusion that the splitting phase circuits can improve the power factor of the loads is demonstrated.
得出裂相电路还可以全面改善负载功率因数的结论。
The primary factor affecting fast phase lock is analyzed by using MATLAB. Then a fast all digital phase locked loop with a high precision automatic modulus control is proposed.
应用MATLAB分析了影响锁相环快速锁定的主要因素，提出了一种具有高精度自动变模控制的快速全数字锁相环。
This article introduces the principle and method how to measure phase noise with spectrum analyzer, and discusses the uncertainty factor and its evaluating method.
对基于频谱分析仪的相位噪声测试原理和方法进行了介绍，并对引起测试系统不确定度的因素及其评定方法进行了讨论。
Single phase active power factor compensation control clips below thousands watts are very popular, among which UC3854 is most typical.
对几千瓦以下的单相有源功率因数补偿控制芯片很多，其中UC3854最具代表性。
Nursing home care and indirect costs accounts for more than 70% of total stroke costs in Ireland, highlighting the chronic phase of stroke care as the most important factor in total stroke costs.
在爱尔兰，家庭护理和间接支出占脑卒中费用总支出的70%，凸显出脑卒中慢性恢复期的费用是总支出的最主要的组成部分。
The test shows that the balance of three phase powers is better and each phase of power factor is higher.
试验表明，三相功率平衡较好，各相功率因数较高。
The results showed that the main crystal phase texture and distribution, the grain shape and size, pore and glass phase is the main factor that affect the mechanical strength of the material.
结果表明，晶相组成与分布、晶粒形状与尺寸、气孔及玻璃相是影响铝质电瓷材料强度的主要因素。
Because of the poor power factor and other concerns regarding a large phase back, multiple tap transformers are recommended even when the control device is a SCR.
由于缺乏能量的因素还有关于多了一大段的关系，即使当使用可控硅整流器时也推荐使用多插孔变压器。
AIM: to investigate the phase change of vascular endothelial growth factor (VEGF) expression in laser-induced choroidal neovascularization (CNV) in rats.
目的：探讨血管内皮生长因子(VEGF)在激光诱导的大鼠脉络膜新生血管(CNV)生成中表达的时相变化。
AIM: to investigate the phase change of vascular endothelial growth factor (VEGF) expression in laser-induced choroidal neovascularization (CNV) in rats.
目的：探讨血管内皮生长因子(VEGF)在激光诱导的大鼠脉络膜新生血管(CNV)生成中表达的时相变化。
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