main frequency
英 [meɪn ˈfriːkwənsi]
美 [meɪn ˈfriːkwənsi]
网络 主要频率; 电源频率; 主频率; 主频
双语例句
- Meniscus Behavior in Mold of Main Frequency Soft-contact Electromagnetic Continuous Casting for Round Billets
圆坯中频电磁软接触连铸结晶器内弯月面行为的研究 - Life Extension Measures of Main Frequency Core Type Induction Cast Iron Holding Furnace Lining
工频有芯感应铸铁保温炉延长炉衬寿命的措施 - The paper introduces today's main frequency constant water supply system and makes the compassion and analysis.
介绍了现今主要的变频恒压供水控制系统，并对其进行比较分析。 - In this paper we zoom some regions of FFT spectrum by the Fourier transform, get the precise value of some main frequency, and thus greatly improve the frequency discrimination of FFT spectrum.
在细化频谱分析时，可以得到某个主要频率成份频率、幅值、相位的精确值，极大地提高了频率分辨力，对瞬态及恒定采样长度信号的频率细化分析十分有效。 - An Experiment of Bringing About the Chaos by Acousto-Optic Bistable System and the Analysis on the Mode of the Main Frequency
声光双稳系统浑沌产生实验及其主频模式分析 - The main frequency, attenuation and amplitude of seismic wave can detect change of crack opening.
可利用纵横波的振幅、主频、衰减（或品质因子Q）和主振幅的变化来检测裂缝张开度的变化； - The male mosquitoes show response only to the main frequency of the female wingbeat sound.
雄蚊只对基本频率的雌蚊翅振音起反应，雌蚊翅振音的偶然变化不会降低其对雄蚊的引诱力。 - Calculation indicates that the noise from engine valve cover at main frequency range is reduced when using BMC.
计算结果表明压铸BMC气门室罩在主要频率区间比用铸铝气门室罩声辐射功率低，有降噪作用。 - This paper analyzes the impact of on-the-spot noise and the single frequency noise of the main frequency noises of woodworking machine-sander on workers 'physiological and psychological load from the aspect of the noise influencing heart rate.
该文从噪声对人体心率影响的角度，分析了木工宽带砂光机（BSG2713）的现场噪声及其主要频率的单频噪声对工人生理及心理负荷的影响。 - A new method realizing adaptive filtering system is introduced. In this system, real-time tracing for center frequency of filtering and the sectional variation of bandwidth are implemented by using main frequency of signals extracted by FFT spectrum analysis.
介绍了一种较新颖的自适应滤波系统的实现方法，它是利用FFT谱分析抽取的信号主频来实现滤波中心频率实时跟踪及带宽分段变化。 - The signal tendency and noise were canceled based on wavelet analysis. And 7 fault symptom parameters including two new parameters ( period extension and main frequency delay) were put forward.
在基于小波分析（WA）的基础上对信号进行消除趋势项和除噪处理，并提出了包括周期延长和主频推移2个新的判据在内的7个特征参数。 - Then the graph of the changes of group and energy velocity with the length of cutoff region and the main frequency of the wave packet is received.
计算了波包穿越势垒的群速和能量速度，得到群速和能速与截止区长度的关系图，以及群速与激励源的工作频率的关系图。 - Moreover, it descends linearity with the main frequency of wave packet.
而平均群速随输入波频率增加整体呈线性下降趋势。 - This paper mainly introduced the technology of computer multimedia and the main frequency characteristic of the geosound. At the same time, discussed the method of using computer multimedia technology to detect the geosound and realize imminent earthquake prediction.
本文主要介绍了计算机多媒体技术以及地声的主要频谱特征，同时探讨了利用计算机多媒体技术进行地声的实时监测从而实现对地震的临震预报的一种方法。 - The experiment has validated that transducer partially debonding results in clear change of the response signals 'amplitudes, main frequency points and amplitudes of the main frequency points.
试验结果表明，脱胶损伤对响应信号的幅值和主频点以及主频点的幅值均有影响。 - From the calculating results, the main frequency of rail and sleeper lateral vibration is low.
从计算结果可知，轨道结构的横向振动频率较低，且钢轨与轨枕的横向振动主频相接近。 - Based of main frequency arc extinguishing theory, the intermittently arc grounded sequence are simulated only with a module named breaker the first time and the restrain effect of arc extinguishing coil to intermittently arc grounded over voltage are also analyzed.
本文根据工频熄弧理论，首次仅利用breaker模块模拟了电弧间歇接地过程，并分析了消弧线圈对电弧间歇接地过电压的抑制作用。 - Firstly we introduce the concept of Acoustic Frequency Spectrum, and secondly we design three main frequency ( 10 K, 20 K, 40 K) acoustic transducers in acoustic sonde.
首先介绍了声频谱测井方法的理论基础，在此基础上在声频谱声系中设计了10K、20K、40K三种不同主频的声波探头组合。 - Analyze the distribution of internal noise and main frequency ingredient with different speed.
分析了不同车速工况下车内噪声的分布状况及主要频率成分。 - Though theoretical Analysis and simulation research on high frequency noise component of power system signal during fault, the paper fmd there is a main frequency in high frequency noise component, and propose a main frequency evaluator based on generic algorithm.
通过对电力系统故障信号高频噪声分量的理论分析与仿真研究，发现高频噪声分量存在一个主频，并提出一种使用遗传算法的主频频率估计器。 - And amplitude of pressure fluctuation and main frequency decrease accordingly.
因此压力脉动的幅值越小，主频也越小。 - Aiming at Morlet wavelet, the relations between attenuation factor and main frequency, between attenuation factor and scale parameter, between attenuation factor and quality factor of filter are deduced by theory deduction and data experiment.
针对Morlet小波，通过理论推导和数据试验，确定了衰减因子与主频的关系、衰减因子与尺度参数的关系、衰减因子与频率域滤波器品质因子（带宽）的关系。 - The final result provide the curve of main frequency changing in time.
仿真最终结果给出了多普勒频率随时间变化的曲线。 - In mobile communication systems, the most important thing is analogue and digital cellular radio systems, the main frequency range around 800~ 1000MHz and 1700~ 2200MHz wireless LAN system.
在移动通信系统中，最重要的是模拟式和数字式蜂窝无线电系统，主要频率范围围绕着800～1000MHz和1700～2200MHz的无线局域网系统。 - Millimeter-wave is the main frequency band in military electronic technology at the present.
毫米波频段是目前军事电子技术发展的主要频段。 - Finally, we can determine the direction and the main frequency point of the signal to fulfill tasks for underwater weak target detection.
这样以后，我们可以确定目标信号的来向和主要频率点，完成了水下弱目标被动探测的任务。 - The main frequency domain enhancement methods are: low pass filtering, high pass filtering and homomorphic filtering.
频率域的增强方法主要有：低通滤波、高通滤波、同态滤波。