It is suggested that low frequency fluctuation occurs with cavitation inception in water hydraulic pump.
提出了在纯水液压泵中气蚀初生伴随着低频压力脉动现象。
Second, this thesis analyses algorithm precision in case of frequency fluctuation and presents improving measures.
其次，分析了由于频率偏移影响傅氏算法精度并提出其改进措施。
For uniform time sampling, the level of frequency fluctuation will greatly influence the results of spectrum analysis.
采用等时隙采样方法，频率随机波动的大小则会严重影响谱分析的结果。
The low-frequency fluctuation periods and the initial amplitudes have close relationship in the resonance interaction.
三波共振相互作用低频振荡周期与初始扰动振幅有很强的相关关系；
The accuracy of the dielectric loss measurement based on harmonic analysis algorithm is greatly influenced by the frequency fluctuation.
用谐波分析法进行介损测量时，很容易受到系统频率波动的影响，从而降低测量的准确度。
Dynamics of a semiconductor laser subject to moderate optical feedback operating in the low-frequency fluctuation regime is numerically investigated.
半导体激光器在适度光反馈条件下，在数值上研究出其低频波动区域的动态特性。
Results show that the frequency spectrum characteristics of arc diffluence is accordance to jet fluctuation. Arc diffluence in the new gun is confined obviously.
试验结果表明，电弧分流和射流脉动的频谱特性是一致的，在使用新等离子体喷枪时，电弧分流明显得到了限制。
LEO satellite communication system has the properties of larger power dynamic range, larger and faster changed doppler frequency shift and rapid fluctuation compared to ordinary communication system.
相对于一般的通信系统而言，低轨卫星通信系统具有信号动态范围大，多普勒频移大且变化速度快，信道起伏剧烈等特点。
At present, our country power quality national standard was chiefly stipulated five quotas: frequency, harmonic and voltage deviation, three-phase unbalance and the voltage fluctuation and flicker.
目前我国电能质量国家标准主要规定了五个指标：频率、谐波、电压偏差、三相不平衡及电压波动与闪变。
This study also finds that personality traits has relation with the mood experience, affect intensity, metal resilience, the frequency of fluctuation of mood and the regulation strategy usage.
本研究也同时发现人格特质与心境体验、感情强度、心理弹性、心境波动频率、调节策略使用有关。
The system's global characters are obtained under different input torque fluctuation, backlash, composite transmission error, exciting frequency and damping ratio.
得到了系统在不同的输入转矩波动、齿侧间隙、齿轮综合误差、激励频率和阻尼比参数下系统的全局特性。
The results show that the non-linearity is mainly attributed to a thermal fluctuation magnetic after effect and a numerical variation of the magnetic domain with frequency.
结果表明，非线性主要来源于热起伏磁后效和为了降低微涡流损耗而引起的磁畴数随频率的变化。
The significant factors which exert an influence on instantaneous fluctuation of motor current are in sequence :Vari-speed wave form, vari-speed amplitude and vari-speed frequency.
在变速参数中影响电机瞬时电流波动最为显著的因素依次为变速波形、变速幅度和变速频率。
Through the statistical analysis of the test results, it was found that we could obtain the liquid slug frequency from the fluctuation of the slug liquid holdup.
通过对试验结果的统计分析可以得出：①可以利用段塞流持液率的波动情况来确定液塞频率。
For a fixed sound source depth, the acoustical fields caused by high send frequency has strong sound intensity fluctuation, and their variation is sharp enough in an adjacent range.
对固定的声源深度，发射频率大的声场对应的声强起伏大，且相邻距离处起伏的强度很剧烈；
The result showed that the fluid fluctuated under rolling motion, and the frequency of the fluctuation was the same as the rolling frequency.
实验结果表明，流体在摇摆作用下产生波动；波动频率与摇摆频率一致。
Pulse signal is one of the most primary physiological signals, including the pulse frequency, the pulse rhythm, pulse-filling ratio, state of stream, state of motion, fluctuation amplitude and so on.
脉象信号，是人体最重要的生理信号之一，包括频率、节律、充盈度、通畅的情况、动势的和缓、波动的幅度等。
Results show that the motor has good stability. The speed fluctuation is controlled within 3% by the frequency automatic tracking technique.
实验结果表明，该电机具有良好的稳定性，利用频率自动跟踪技术对电机转速进行闭环控制，可以将其转速波动稳定在3%之内。
The results show that there are several separated frequency sidebands in the intensity spectrum of the stacked pulse, responsible for the intensity fluctuation.
结果表明，在堆积脉冲的强度谱中存在一系列分立的频率边带，这些频率边带对强度起伏有贡献。
Venation wave spectrum analysis finds out shape-structure change of mid-frequency signal fluctuation.
脉络波谱图分析查明了中范围（频率）信号波动的形态结构变化。
In this paper, it is introduced to the influence of cavitation factor, measurement taps, sampling frequency and sampling time on the test result in pressure fluctuation test of the water turbine.
介绍了水轮机压力脉动试验时空化系数、测量位置及测点、信号采样频率及采样时间等因素对试验结果的影响。
The biggest fluctuation of snowfall in winter in the plateau is located in the south border with high frequency of heavy snowstorm.
冬季高原降雪波动最大的地区在南部边缘地区，暴雪天气频繁。
Abstract: To reduce the fluctuation of frequency response of a Distributed Feedback (DFB) fiber laser used in underwater sound detection, an encapsulated structure with orifices was designed.
摘要：针对分布反馈式(DFB)光纤激光器用于水声探测时频响曲线起伏较大的问题，设计了一种开孔套管式封装结构。
According to the characteristics of the human pulse signals, a pulse fluctuation frequency measurement system is designed.
根据人体脉搏信号特征，本文设计了一种脉搏波动频率测量系统。
The traditional direct torque control system has existed large torque fluctuation, poor performance of low speed region, inconstant switch frequency, etc.
传统的直接转矩控制存在着转矩脉动大，低速性能差、开关频率不固定等问题。
The larger the structural fluctuation of RFE was, the lower the relaxation degree was in the same frequency condition.
在相同的频率条件下，弛豫铁电体的结构起伏程度越大，弛豫程度越低。
That is, fluctuation of the contour vibration frequency with respect to variety of the electrode film thickness can be made small substantially.
也就是说，可以使轮廓振动频率相对于电极膜厚度变化的波动小得多。
The research comes to a conclusions : (1) The stock price fluctuation of listed companies is obviously related to its expected default frequency, and the relation is negative;
研究结果表明：（1）上市公司的股票价格波动与该公司的预期违约频率显著相关，且呈负相关关系；
The research comes to a conclusions : (1) The stock price fluctuation of listed companies is obviously related to its expected default frequency, and the relation is negative;
研究结果表明：（1）上市公司的股票价格波动与该公司的预期违约频率显著相关，且呈负相关关系；
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