查询词典 harmonic integrals

The calculation of power factor is according to ratios of real power and total power. Lower power factor electric equipment representative have unnecessary busywork and harmonic components.

功率因数值的计算是根据实际消耗功率与视在消耗功率的比值为基准，因此功率因数不佳的电力设备即代表存在著不必要的虚功以及谐波成份。

In this paper, we analyze the keys of APF——calculating the parameter of main circuit,harmonic current detecting and current tracking controlling.

本文对有源电力滤波器的关键环节——主电路参数计算、谐波电流检测和控制方法进行了分析。

The equivalence of canonical equation and Heisenbergs Equation to harmonic oscillator systems are verified.

从而验证了海森伯方程和哈密顿正则方程对谐振子系统的等价性。

Objective To investigate the effect of application of harmonic scalpel and carbamide peroxide in laparoscopic cholecystectomy in aged people.

目的 探讨超声刀及注射内给氧在老年人腹腔镜胆囊切除术（laparoscopic cholecystectomy，LC）中的应用效果。

Variable speed system of cycloconverter-fed multiphase synchronous motor is a major area in the development of high-power AC drive system because of its small dimension, large capacity, high torque, high-rate power, wide-range variable speed, low harmonic pollution, and reliable safety. In the low-speed and large-capacity industrial drives, such as rolling mills, winding motors, marine propeller, cement mixer, etc. it will find a wide application in the future.

采用多相同步电动机的交交变频调速系统，具有体积小、容量大、高转矩、高功率比、宽平滑调速区、谐波污染小、安全可靠的特点，是大功率交流调速领域的主要发展方向之一，在轧机，矿山卷扬，船舶推进，水泥球磨机等低速大容量的场合有着广泛的应用前景。

With the multiple spectrum character of the ultrasonic generator, an impedance model of ultrasonic transducer under the triple frequency harmonic is built.

本文利用超声电源的多频谱特性，推导出超声换能器在谐振频率三次谐波下的阻抗模型。

To solve the problem the method of vector orthogonalness of characteristic harmonic was developed.

同时研制了新的电弧高速扫描系统。

In power converters, unbalances generate undesirable DC ripple and non characteristical harmonic s in the AC side.

在电力变换器中，不平衡会产生不希望的直流波动以及交流侧无特征的谐波。

It shows that the cutoff of the harmonic can be extended remarkably by optimizing the chirping parameters.

研究表明，通过适当的选取啁啾参数，谐波的截止位置得到了显著展宽。

Diode switches or voltage controlled varactors implement dual-band resonators such that they can offer low impedance at the second harmonic of each frequency band, while, in some cases, presenting high impedance at the fundamental frequency as an RF choke circuit.

利用二极体开关或电压控制变容器实施双频共振器以提供在双频操作中每一个频段之二阶谐波的低阻抗，同时在一些实施例里也提供主频段的高阻抗、具有射频阻塞电路作用。

There are different types of personal loans available.

有许多不同类型的个人贷款优惠。

The above mentioned teaching model of spiral rising can be used to avoid rigidness in teaching.

上述螺旋式上升的教学模式，可以避免教学形成模式後的僵化现象。