假定两个扬声器都发射恒定频率的纯正弦声波。
Suppose the speakers both emit a pure sinusoidal sound wave of constant frequency.
TB寄存器会以一种依赖于实现的频率周期性地增加，这个频率可能不是恒定的。
The TB register is incremented periodically with an implementation-dependent frequency, which may not be constant.
因此它可以把“两倍于电源频率的直流电”进行“平滑化处理”，成为一个接近恒定的直流电。
Therefore it can be seen that it will "smooth" the "twice mains frequency DC" into a near constant DC voltage.
它具有开关频率恒定，转矩和磁链波动小等特点。
It features in low torque ripple, low flux ripple and fixed switching frequency.
你知道采样率是恒定的，你只是不知道频率。
You know that the sampling rate is constant, you just don't know its frequency.
以空间矢量调制方法来获得逆变器的开关信号，实现了小的转矩脉动和恒定的开关频率。
The control signals of invertor are produced by space vector modulation to achieve a small torque ripple and constant switch frequency.
其它频率点上满足宽带恒定束宽要求的复权向量可以根据参考频率上的复数权值通过折算求得。
The complex weighting vectors at other frequencies satisfying the request of wideband constant beamwidth can be deduced from the one at the reference frequency.
结果表明，该控制方案能在恒定开关频率下对变换器实现高效率的软开关控制。
The results show that this control scheme could realize the high efficiency soft-switch control under the constant switching frequency to the converter.
结果表明提出的控制器可以保持开关频率恒定，并降低了转矩脉动，尤其在低速时。
The results indicate that the proposed controller is capable of maintaining the torque switching frequency constant and reducing the torque ripple, particularly at low speed.
维持滑差频率不变，就可获得近似于恒定转矩的输出特性。
Keeping slip frequency constant we can get nearly constant torque output characteristic.
同时，发动机转速的恒定也使液压泵输出排量稳定，进而保证了行走速度和振动频率的稳定，提高了压实质量。
At the same time, constant engine speed stabilizes output displacement of hydraulic pump and then stabilizes travel speed and vibratory frequency in turn, so that compaction quality is increased.
实验结果表明，研制的智能超声波发生器频率跟踪迅速准确，并能实现振动系统的恒定振幅控制，可以实现振动系统的自动运行。
Preliminary experiments show that the smart ultrasonic generator based on the new method can quickly and accurately frequency track, and can work well with constant amplitude control.
实验结果验证了定子磁链定向的矢量控制策略既能保证定子输出频率恒定，又能较好地跟踪风力机的最大功率输出。
The stator flux-oriented vector controlling strategies of keeping stator frequency constant and capturing the maximum wind power are verified by experiment results.
在电力的众特性之中，电力系统工程师主要关心的是保持恒定的工作频率。
Of the characteristics of electric power, the primary concern of the electric power system engineers is to maintain a constant operating frequency.
SVPWM算法保证了逆变器的开关频率恒定。
主电路开关频率恒定，容易实现。
The main circuit switching frequency is constant, which is desirable for industrial applications.
在分析振动压路机振动频率控制系统的基础上，对控制器进行了设计，提出了采用PID控制实现振动频率恒定的方案。
On the basis of analyzing vibratory frequency control system of vibratory roller, the controller are designed and the plan of vibratory frequency constant control by PID are put forward.
同步期间，电机运行在稳态时的恒定转速和频率下。
The term synchronous refers to the fact that this type of machine operates at constant speed and frequency under steady-state conditions.
单周期控制具有响应快、开关频率恒定、控制电路简单和易于实现等优点，是一种很有前途的控制方法。
One cycle control has the merits of rapid response, invariable switch frequency, simple control circuit and easy to realization and so on. One cycle control is very developing control method.
皮层下神经元的去抑制整合野参与传递视觉图像中的低空间频率信息，并与色觉恒定性机制有关。
The disinhibitory IF of subcortical neurons contributes to transmission of low spatial frequency information of visual images and tO the maintenance of color constancy.
该系列电机的定子采用集中式绕组，转子采用永磁材料加工，电机可根据电源的频率要求，输出恒定的转速。
The stator of motor adopts centralized winding and its rotor applies permanent magnet material. The constant speed can be achieved at a certain frequency of power supply.
频率跟踪和恒定振幅控制是超声加工电源两个重要的特性。
Frequency automatic tracking and amplitude stabilizing are two important characteristics of ultrasonic machining power.
生产线上速度连续可调，频率设定后速度保持恒定，同时也取得了节能40％的效益。
The speed on line can be continuously regulated. The speed remains constant as the freqency being set up. It can save 40% energy consumption.
与其它控制方式相比，OCC优势在于其控制电路结构简单，且高频开关的开关频率是恒定的。
Comparing with another control methods, OCC have more simply controlling circuit and constant switch frequency.
结合矩阵变换器双空间矢量调制方法，并将矩阵变换器过调制方法用于感应电机直接转矩控制中，达到矩阵变换器开关频率恒定和电机快速转矩响应的目的。
Double space vector modulation and overmodulation of matrix converter were proposed in this paper to ensure the matrix converter switching frequency to be fixed and fast dynam-ic torque response.
简要分析了在考虑重力作用的情形下，带电粒子在恒定磁场和振荡电场中的运动状态，求得了其运动方程，并就拉莫频率和振荡频率的关系进行了讨论。
The motion equation of the moving charged particle is obtained, and the relation between the Lamor frequency a and the oscillation frequency wis discussed as well.
本文针对天线阵通道之间与频率无关的恒定通道失配问题，提出了一种基于LMS算法的易于工程实现的通道校正技术。
A calibration technique based on LMS algorithm has been proposed to the question of antenna array channel mismatch independent of frequency.
本文针对天线阵通道之间与频率无关的恒定通道失配问题，提出了一种基于LMS算法的易于工程实现的通道校正技术。
A calibration technique based on LMS algorithm has been proposed to the question of antenna array channel mismatch independent of frequency.
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