Surge suppressor and low - order harmonic filter can improve power supply quality 摘要利用浪涌抑制器和低次谐波滤波装置，可有效改善供电质量。
The study of remote sensing ch4 concentration based on tunable diode laser absorption spectroscopy 波段可调谐二极管激光吸收光谱的二次谐波检测研究
Proposed new method to enhance high - order harmonic generation conversion efficiency through atomic coherent states 提出用原子相干态来提高高次谐波效率的新方法。
This is fairly commonly utilized , and affects the line frequency component ( and odd harmonics ) 这种作法已经被广泛应用，并可以用以改善市电频率成分（包括奇次谐波。 ）
Fourth - harmonic mixers are adopted in carrier recover in the modulation millimeter wave qpsk signal 解调方案同样采用四次谐波混频器在毫米波已调信号上进行载波同步。
According to the model , the harmonic voltages at the frequency of 1 oohz at the side of stator are analyzed 在此基础上，本文对发电机定子侧的二次谐波电压进行了分析。
According to computer calculating , we can obtain the harmonics amplitude of the stator coil of excitation machine 通过计算，可得到励磁绕组中感应电势的各次谐波幅值。
The no . 1 , 3 , 4 , 5 harmonic in the spectrum based on radius represent almost all shape information of apples 用幅长方法得到的频谱，其1 ， 3 ， 4 ， 5次谐波就基本上能够包含苹果的形状信息。
And by means of semiclassical theory , the changes of hhg for realistic hydrogen atom in the static electric field is explained 借助于半经典理论，解释了在静电场作用下高次谐波发生变化的机制。
As a real time harmonics measuring device , it is important that it can real time measure various harmonics accurately 作为一种实时的谐波测量系统要求既能精确的测量各次谐波，又具有较高的实时性。
