查询词典 harmonic integral

Because the harmonic is harmful to the electric net and electrical equipment, it is very important to measure the harmonic accurately and restrain it. Some methods for harmonics measurement are proposed in these years.

由于谐波对电网及用电设备有诸多危害，准确测量谐波及抑制谐波就显得尤为重要。

Use the Rogowski coil as the sensor and transmit the signal and energy with the optic fibre, analyse the principle of the measurement of harmonic current in HVDC system and the factors of its measurement of influence by opticelectricity and computer technology. The Rogowski coil is used to measure the harmonic current in HVDC system. It doesnot affect by direct current and has good frequency characteristics.

本文在全面分析高压直流谐波电流测量方法的基础上，确定以空心线圈为传感器，以光纤传输信号和能量，结合光电技术、微计算机技术，系统地分析了谐波电流测量系统的工作原理及影响其测量的多种因素，提出了解决问题的具体方法和措施。

In this dissertation, digital lock-in detection techniques under integer period sampling and non-integer period sampling are separately investigated (1) Under integer period sampling, digital signal sequence is acquired through sampling the measured signal, but digital reference sequence is acquired through mathematical operation, then digital lock-in detection can be realized by calculating crosscorrelation function of digital signal sequence and digital reference sequence Harmonic measure is also analyzed, and a method of measuring harmonic of a periodic signal under aliasing is put forward.

本文对使用采样ADC把模拟信号转换为数字信号并通过计算数字信号的相关函数来实现锁定检测的技术进行了研究，在此基础上设计了一个多功能的数字LIA并在一些科学实验中进行了应用。本文对整周期采样和非整周期采样时的数字锁定检测技术分别进行了研究。(1)在整周期采样时，对被测信号进行采样得到信号序列，而参考序列由数学运算得到，通过计算信号序列和参考序列的互相关函数就可实现锁定检测。

Based on this system, harmonic and subharmonic periodic response of S-LF subjected to harmonic motion is investigated by using Floquet theory.

并给出了这种结构的最大滑动位移响应随滑移面摩擦系数的变化曲线，可供设计时参考。

Loser here is the frequency spectrum of the distribution curve, complex oscillation amplitude is decomposed into different frequency and different harmonic oscillation, the oscillation amplitude harmonic frequencies arranged in accordance with the graphics is called the spectrum.

在这里输频谱就是频率的分布曲线，复杂振荡分解为振幅不同和频率不同的谐振荡，这些谐振荡的幅值按频率排列的的图形叫做频谱。

It focuses on examining the subjects' abilities to find tonality and mode, perceive tendency of melodic pitches and harmonic functional progression, and recognize meter and segment the groups of rhythm. We can thus consider whether or not receiving harmonic training has an influence on recognizing meter and segment groups of rhythm.

它包含调式调性的确定、旋律音高的倾向、和声的功能解决、拍号的识别以及节奏组合的划分等测验项目，实验结果表明，师范类音乐专业大学生对调性音乐音高层面基本组合规则的感知能力不存在统计意义上的差异；是否学过和声对个体把握音乐在时间层面的基本组合规则具有影响作用。

Mass transit ; harmonic ; harmonic analysis ; voltage distortion ratio

城市轨道车辆；谐波；谐波分析；电压畸变率

A set of FTD harmonic drive with transmission ratio 100 and involute tooth profile is development by using the method presented in this dissertation, and by the meshing law experiment and the kinetic accuracy comparison experiments between two kinds of harmonic drive, the correctness of relative theory in this dissertation is testified further.

利用本文提出的方法，成功地研制出具有渐开线齿廓、传动比为100的四齿差谐波齿轮传动装置，通过对其啮合规律的测试和两种谐波齿轮传动运动精度的对比实验，进一步证实了本文有关理论、方法的正确性。

The dependence of the harmonic generation on the parameters of laser and plasma are systematically analyzed. Some discussion on the pathway to improve the ratio of the harmonic power to the pump laser is given.

首次研究了超强激光在电子-正电子等离子体中激发的相对论相干谐波辐射，发现其特性强烈依赖于准静态的外加磁场或自生磁场。

In the HVDC engineering, it will produce a series of harmonic which than the fundamental frequency of power grid, and the harmonic have adverse effects with the power systems, equipment and power grids.

中文摘要：摘要：在高压直流输电工程中会产生一系列大于电网基波频率的谐波，而谐波的存在会对电力系统、设备及电网造成不良影响。

Pradeep Indulkar, a senior official at the Maharashtra state Home Ministry say 101 human were killed and 287 injured.

马哈拉施特拉邦内政部高级官员Pradeep Indulkar称，有101人在冲突中丧生，287人受伤。

Mark Frei, a senior vice president of West, says 80% of West's homeagents have some college education, compared with 30% of those whowork in office-based call centers.

Frei说，该公司80%在家办公的人员都拥有本科学位，而在公司电话中心工作的人中只有30%拥有本科学位。