The exponential type horn can suppress high harmonic wave and low harmonic wave.
指数型号筒具有抑制高低次谐波的作用；
Stereo channel separation of 50 dB and low harmonic distortion for testing FM stereo receivers.
立体声通道分离五零分贝和低谐波失真测试的调频立体声接收机。
Under condition of no power factor regulator, it can generate high power factor and low harmonic rate.
这种镇流器在没有功率因数调节器的情况下能产生高功率因数和低谐波率。
The experiment results indicate the system has the characteristics of high power factor and low harmonic current.
实验结果表明，该系统具有输出功率因数高，对电网谐波污染小等优点。
SVPWM has low harmonic and high voltage utilization. The control method is simple and easy for digital realization.
而空间矢量法谐波特性好、电压利用率高、控制方法简单便于数字实现。
Using the method of firing Angle prediction, steady sinusoidal output voltage with low harmonic components can be generated.
通过开关角预置方法，叠加出了谐波含量低的稳压正弦波输出。
A novel resonant-type high frequency AC bus topology is presented and low harmonic disortion current-fed high-frequency AC bus is obtained.
介绍了一种新的固态短路限流器的驱动电源架构，提出新的谐振型高频交变恒流源拓扑方案，获得了低谐波含量的电流型高频交流母线。
Experiment results showed that the correction device of power factor could realize high power factor, low harmonic distortion and low ripple of output voltage.
通过实验结果表明，单级功率因数校正装置可以实现较高的功率因数、较低的总谐波畸变，而且输出电压纹波小。
The research in this thesis is focused on the low harmonic variable-frequency power for the system meeting the needs of wind tunnel propeller model testing requirements.
旨在研究满足螺旋桨飞机模型风洞试验要求的为高功率密度电驱动系统供电的低谐波变频电源。
Currcnt-type four quadrant converter is an AC-DC converting device with pulse width modulation, whose advantages are high power factor, low harmonic current and convenient regeneration etc.
电流型四象限变流器是一种脉冲宽度调制的交直流变换装置，具有功率因数高、谐波电流小、再生方便等优点。
This paper presents the design and implementation of a zero-voltage-transition power factor correction (PFC) converter having high power factor, high efficiency, and low harmonic line current.
本文研制一个具有高功率因数、高效率、低谐波且可操作于高频之零电压切换升压型功因修正器。
Simulation and experimental results show that the proposed converter has sine wave input current and output voltage, low harmonic content, adjustable power factor, and zero voltage commutation.
仿真和实验结果表明：所提出的变换器输入电流和输出电压为正弦，谐波小且输入功率因数可控，并可实现零电压换流。
The active filter acts as an infinite impedance to the external for the fundamental frequency and as a low resistor for harmonic frequencies.
对外电路而言，在基波频率下有源滤波器被控制为无限大阻抗，在谐波频率下被控制为小电阻。
Speed regulation system using cascade control method with thyristor is a low-cost system, but the classic system has some shortages, such as low power factor, serious harmonic pollution and etc.
晶闸管串级调速系统是一种廉价、简易的调速系统，但是传统串调系统存在着诸如功率因数低、谐波污染严重等弊端。
In this paper has analysed high levels of harmonic currents and low Power factor of electronic ballast by circuit study.
通过电路分析对电子镇流器存在的电源电流谐波高和功率因数低等问题。
Results The sensitivity, specificity and accuracy of diagnosing malignant liver tumors by contrast-enhanced harmonic ultrasonography with low mechanical index were 96%? 90.7%? 93.8% respectively.
结果低机械指数谐波超声造影对恶性病变诊断的的敏感性、特异性和准确性分别为96%、90.7%和93.8%。
It can achieve a fixed output of DC voltage in the universal input range of ac 80 ~ 265 V. It owns the advantages of high efficiency, low total harmonic distortion, PF near to 1.
该方案能在80 ~ 265V宽输入电压范围内得到稳定直流电压输出，具有效率高、总谐波畸变率低、功率因数接近为1等特点。
Simulating low pass filter is adopted to reduce the spectrum alias and improve the speed of harmonic measurement.
采用模拟低通滤波器降低频谱混叠，提高谐波检测的实时性。
The energy minimization characteristic of the harmonic map preserves the low distortion that may yield in the process of texture mapping.
由于调和映射具有保持映射能量最小的性质，该方法可以最小化约束纹理映射可能导致的扭曲形变。
This material is suitable for low power signal transmission transformers (such as ADSL transformers), and can reduce harmonic distortion and improve transmission speed.
这种材料适用于低功率信号传输变压器（如ADSL 变压器），可以降低变压器谐波失真，提高传输速率。
Thyristor cascade control system is a low-cost system, but the traditional cascade control system has some shortages, such as a low power factor, serious harmonic pollution etc.
晶闸管串级调速系统是一种廉价、简易的调速系统，但是传统串调系统存在着诸如功率因数低、谐波污染严重等弊端。
In harmonic approximation, the specific heat obeys T3 law at low temperature, keeps a constant at high temperature.
在谐和近似下，低温比热符合T3定律，高温比热趋于常数。
As one of inverters, Sinusoidal Pulse Width Modulation (SPWM) inverters can achieve low total harmonic distortion (THD) output wave.
正弦脉宽调制(SPWM)逆变器作为逆变器的一种，可输出谐波含量小的正弦波形。
This paper introduces a harmonic analysis device based on USB, using FPGA to process the harmonic calculation, that has advantages such as high speed, low cost and modularization.
本文设计了一基于USB总线的谐波分析仪，用FPGA芯片进行谐波计算，具有速度快、成本低、模块化等特点。
If the stator inside winding is out of order, we must consider the influence of the harmonic wave with low orders or fraction orders when calculating the air space inductance values.
如在定子绕组内部故障情况下，气隙电感量的计算必须考虑低次和分数次谐波的影响。
The HARMONIC SCALPEL technology (Ethicon Endo-Surgery, Inc. , Cincinnati, Ohio) controls bleeding by coaptive coagulation at low temperatures ranging from 50?C to 100?C.
超声刀技术（爱惜康内镜外科公司，辛辛那提市，俄亥俄州）控制出血是在50 ?C至100 ?C的低温范围内凝血。
Experimental results shown that this system is of high precision, quick dynamic response and low current harmonic.
实验结果表明：该系统精度高，动态响应快，谐波电流小。
Also, the harmonic filter is a low pass filter having a frequency cut-off point that attenuates first order harmonics of the output signal.
此外，谐波滤波器是具有频率截止点的低通滤波器，该低通滤波器削弱输出信号的一次谐波。
This paper improved the harmonic current detection method based on UPF (unity power factor), using the slipped window integral to replace the LPF (low pass filter).
本文对基于单位功率因数的谐波电流检测方法进行了改进，用移动窗积分法取代检测中常用的低通滤波器。
This paper improved the harmonic current detection method based on UPF (unity power factor), using the slipped window integral to replace the LPF (low pass filter).
本文对基于单位功率因数的谐波电流检测方法进行了改进，用移动窗积分法取代检测中常用的低通滤波器。
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