| 1. | This paper discusses the problem of harmonic waves of the converter in running , and the countermeasures are also proposed
摘要本文针对变频器运行中存在的谐波问题，分析谐波产生的原因及危害，并提出解决方法。 |
| 2. | Abstract : this paper analyzes the reason of harmonics appearance , the harm to power supply system , and raises the managing and technical measure to restrain the harmonics
摘要:文章分析了供电网谐波产生的原因，阐述了谐波对电气设备的危害，提出了抑制谐波的措施。 |
| 3. | For more and more no - linear electoral devices are used in every day life , harmonic pollution in the power supply system becomes high and it causes lots of serious problems
随着供电系统中各种类型的非线性负荷的不断增加，电网中的谐波含有率变得越来越高，由谐波产生的各类事故也呈不断上升的趋势。 |
| 4. | The reasons and harm of high harmonics in the substation of electric arc furnace , and some measures of avoiding and decreasing the high harmonics are put forward after careful analysis
摘要通过对电弧炉变电所在运行过程中出现的现象进行分析研究，指出了高次谐波产生的原因及其危害，提出了防止和减少高次谐波的措施。 |
| 5. | So far we discuss the ionization and hhg of hydrogen atom by using numerical method in which the laser field is treated as a classical extent field . chapter five is another part of our work
这里，我们将激光场看成一含时的经典外场，采用数值计算法来解含时schlodinger方程，对强激光场中氢原子的电离与高次谐波产生以及相关的一些现象进行了研究。 |
| 6. | This paper analyses the harm of power system harmonics . it also points out the significance of harmonics measuring and the developing condition of harmonics measuring device , and points out the significance of the research of this paper
论文分析了电力系统谐波产生的原因及其危害，指出谐波测量的重要意义及谐波测量装置的发展状况，说明本论文研究的重要意义。 |
| 7. | We got the pl spectrum of zno nanowires using an 806nm fs laser act excited source based nonlinear optical process . the results showed the second harmonic generation ( shg ) phenomenon besides the exciton - exciton collision peak at 388nm , at
实验中除388nm处的激子-激子碰撞峰之外,还观测到了二次谐波产生( shg )现象,另外在515nm附近观测到了由氧空位造成的绿光发射峰。 |
| 8. | The first chapter is our introdiction , which briefly discussed the progress on the laser - atom interaction studies in literatures . we stressed on the ionization , hhg and the applications in strong laser field . the chapter two presents microscopic theory and numerical model about hhg
第一章为综述，简要介绍了激光-原子相互作用问题的发展和研究现状，其中着重介绍了强激光场中原子的电离和高次谐波产生的问题以及它们在实际中研究的意义。 |
| 9. | This paper introduces the causes of electric harmonic of electric power system and its harm to electric network and electric equipment , puts forward the comprehensive treating measures involving enhancing harmonic management , establishing and consummating automatic harmonic monitoring system and taking corresponding technical means
文章分析了电力系统谐波产生的原因，综述了谐波对电网及电气设备的危害，提出了综合治理措施，即加强谐波管理，建立和完善谐波自动监测系统。 |
| 10. | Abstract : temporal properties of the second - ordre process with a chirped incident pulse are theoretically calculated . the chirp influences the irradiance and the pulse shape of the second harmonic wave with large phase mismatch . the phase distortion of all three waves is dependent more strongly on the chirp than on the phase mismatch
文摘:讨论了在大相位失谐下,基波为频率啁啾脉冲的二次谐波产生过程,结果表明选取合适的啁啾参量可以使二次谐波的光强提高,但同时会使其波形和相位发生变化.三波相位的畸变主要取决于入射的基波啁啾脉冲,而与相位匹配的失谐量关系不大 |
