Maintenance-free brushless drive motor with frequency inversion, has high start torque and short acceleration time.
免维护高力矩无刷变频电机直接驱动，启动力矩大、加速时间短。
Basic principle of speed regulation by frequency inversion is introduced and its application results in power plant attached to vacuum salt making enterprises is summarized.
介绍了变频调速的基本原理，并对其在真空制盐企业自备电厂中的实际运用效果进行了总结。
In order to improve the power parameter further, the intermediate frequency inversion of an electric voltage power type series resonance and frequency trace technique are adopted.
为使系统的功率因数较高，采用电压源型负载串联谐振中频逆变器和频率跟踪技术。
The features of frequency inversion and speed regulation technology were introduced. Its application in water supply project and house construction and energy saving effect were presented.
介绍了变频调速技术的特点。分析、比较并列举了变频调速技术在工业和民用领域中的几个应用实例。同时，也描述了他们的性能及节能效果。
The other problem in seismic inversion is that the frequency information and amplitude real value recorded by seismograph are incomplete and severely absent.
地震波反演的另一个障碍，主要是所记录的地震波响应中频率信息及相应的振幅真值的不完整与严重缺失。
Compared with the entire frequency equalizer, this algorithm has better performance because it avoid the large matrix inversion.
与整体频域均衡算法比较，可以在避免求大型矩阵逆的复杂算法上获得更好的性能优势。
The temperature inversion frequency gets highest in winter.
冬季的逆温频率最高。
The digital circuits are introduced in the SPWM inversion, which have brought the elimination of harmonics, high switching frequency, simplified circuits and high reliability.
而对于SPWM逆变，采用数字电路实现SPWM触发脉冲的生成，在消除谐波、提高开关频率、简化电路结构，提高集成度和可靠性等方面，取得了很好的效果。
But whether it can reach the prospecting aim by study for inversion of attenuation by earth absorption and by decreasing high frequency noise?
但是否可以通过研究反演大地吸收衰减和减少采集的高频噪声达到勘探的目的呢？
The fitting difference is reduced and the precise of quantitative interpretation is improved by means of joint TF inversion with time and frequency window data.
利用时间窗数据和频率窗数据所进行的联合时-频反演，缩小了拟合差，提高了定量解释精度。
This paper introduces a new inversion control circuit based on 80c196mc microcontroller for thyristor medium frequency power supply. Meanwhile the hardware and software designs are also provided.
针对晶闸管中频电源的核心——逆变电路，提出了一种基于80c 196MC单片机的控制电路，给出了其构思的硬件和软件设计。
After 3d high resolution seismic data of Yacheng 13-1 structure were inversed using restriction sparse pulse inversion, data volume of full-frequency band absolute wave impedance was gained.
利用约束稀疏脉冲反演方法对崖城13—1构造的高分辨率三维地震资料进行了反演，得到了全频带的绝对波阻抗数据体。
Applying high frequency LC series connection resonant circuit, no industrial frequency transformer, high inversion efficiency.
采用高频LC串联谐振电路，具有逆变效率高的特点。
Image is restored which is blurred by the known linear model and noise, with the method of frequency-domain regularized inversion and wavelet-domain wiener filter denoising.
采用频域正则化求逆和小波域维纳滤波去噪的方法对已知线性降晰模型的含噪图像进行图像复原。
In this paper, firstly the mathematic model for variable frequency motor is developed, and harmonic wave is analyzed when variable frequency motor is fed by inversion.
本文首先建立变频电动机的数学模型，对逆变器供电时的谐波进行了分析。
Proton NMR two dimensional time-domain data are collected based on the inversion-recovery technique. Double Fourier transformation of those data yields the two dimensional frequency-domain data.
基于反转恢复法建立质子nmr二维时域数据，经双重付里叶变换获得二维频域数据。
When the squeezing coefficient of the initial field increases, the frequency of collapse-revival in atomic population inversion increases, and the amplitude of revival decreases.
研究结果表明，初始光场的压缩系数增大，崩塌和回复的频率增大，回复值减小。
The ridge regression method is applied to impedance inversion. The seismic data are divided into a few parts with certain frequency bandwidth in the inversion process.
应用岭回归法对波阻抗反演进行了理论和应用研究。
With the increase of the average photon number of the coherent light field, the oscillation frequency of the atomic population inversion increases correspondingly.
随相干光场平均光子数的增加粒子数反转的振荡频率增大；
With the increase of the average photon number of the coherent light field, the oscillation frequency of the atomic population inversion increases correspondingly.
随相干光场平均光子数的增加粒子数反转的振荡频率增大；
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