正弦波

Fundamental frequency is either equal to the switching frequency of the inverter(square-wave and PWM inverter)or ist simple fraction(1/3,1/5,and so) such as in Multiple PWM or sine PWM inverters.

基本频率是逆变器在相等的开关频率，或者方波是简单的分数(1 / 3，因此，1 / 5)，如在多个PWM脉宽调制逆变器或正弦量。

And nonlinear fast response time. The distribution of refractive index of the devicesatisfies sine function.

并制备了非线性一维光子晶体波导光双稳器件，该器件的折射率空间分布呈正弦形式。

Sinusoidal standing wave function of the realization of a dynamic presentation, you can learn how to use timers and Mapping dialog box.

详细说明：实现一个正弦驻波函数的动态演示，可以学习用定时器和怎么用对话框来绘图。

Using the moderately thick cylindrical model and sinusoidal interpolation basis function, the sleeve monopole at the circular ground plane is analyzed by the moment method. The input impedance and radiation pattern are given.

采用粗圆柱线天线快速精确计算模型，选用正弦插值基函数，将圆盘地面和套筒作为一个整体进行矩量法分析计算，研究其驻波和辐射方向图特性。

This paper shows a new wave of non sinusoidal oscillation of mold new trapezoid and the establishment of its equations of velocity.

提出了一种新的结晶器非正弦振动波形新梯形波，并建立了该振动波形的速度表达式。

Its basic function is to measure sinusoidal signal, square wave signals and a variety of other changes in physical quantities per unit time.

它的基本功能是测量正弦信号，方波信号及其他各种单位时间内变化的物理量。

To eliminate common-mode voltage of cascaded multi-level inverter, three kinds of phase-difference SVM based on left and right bridge vectors are proposed firstly. From these three modulations, equivalent SPWM components are deduced, and the unipolarity and bipolarity of output waveforms are analyzed. 2π/3 PD-SVM (phase-difference space vector modulation) is testified be unipolar.

为消除级联型多电平逆变器的输出共模电压，首先提出了基于左、右桥臂矢量的三类相差空间矢量调制(space vector modulation，SVM)技术，数学推导出三类调制技术的等效正弦脉宽调制(sine pulse width modulation，SPWM)的调制波，并分析了其各自相电压输出波形的单、双极性，证明2π/3相差SVM必为单极性调制。

Numerical calculation for sinusoidal signal, Gaussian periodic signal and square periodic signal is performed. The results show that zero-broadening slow and fast light is achieved using this optimized Brillouin comb gain for the three types of periodic signals, and the validity of the universal formula is proved.

通过对正弦信号、周期性高斯信号和周期性方波信号的数值计算，结果表明，利用该优化的梳状布里渊增益谱可实现这三种周期信号在零展宽下的快慢光，证实了所得普适公式的正确性。

By a voltage-traced SPWM technology, the sine pulse width modulation wave was derived and the project of voltage output was designed. Resultantly, the microcontroller was fully used in the variable-frequency power system.

讨论了系统的硬件、软件设计和正弦脉宽调制波的生成和输出稳压方案的设计，采用了实时电压跟踪SPWM技术，使单片机在变频电源系统中得到了有效的应用。

Sedment waves migrate upslope and include generally an upslope climbing,asymmetry upslope and sinusoidal shape in stratigraphic section.

沉积物波向上坡迁移，内部包括上攀床形单元、不对称波形单元及正弦波形单元。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。