In DVD focus servo system, the skew of the disc induces periodic disturbance whose frequency is the same with the rotation frequency of the disc.
在DVD聚焦伺服系统中，光盘翘曲会导致产生与光盘转动频率相同的周期性扰动。
At the same time optical rotation of the particles was realized. The rotation frequency was measured by CCD camera and quadrant photodiode detector (QD).
同时利用CCD相机和四像限探测器(QD)测量了粒子光致旋转的转动频率，研究了粒子的旋转频率随激光功率的变化关系。
Time domain synchronous averaging can reduce the signal not coherent to rotation frequency effectively, and extract the repetitive signals directly related to machine operation condition.
而时域同步平均可以有效衰减与回转频率无关的干扰，提取与工作状态直接相关的周期信号。
The first part is about the features extraction, including the estimation of source level of the ship-radiated noise and the line extraction of the rotation frequency of propeller noise spectrum.
首先是舰船辐射噪声特征量的提取，包括舰船总声源级的估计和螺旋桨轴频线谱的提取。
In this case, you have to open and close it with exactly the same frequency as the rotation of the neutron star.
在这个例子里，你必须以和中子星，旋转相同的频率，对其进行开关。
It blinks at us at exactly the frequency of its rotation, 33 milliseconds.
它闪耀的频率和，旋转的频率完全相同，是33毫秒。
These high frequencies correspond to the rotation speeds of centrifuges; America tightly controls the export of frequency converter drives able to operate at frequencies above 600 Hz.
这些高频率与离心机的转速相对应；美国对能够以600赫兹以上频率运行的频率转换器驱动的出口进行了严格管控。
Step motor control, by pulse by changing the order of electricity can change the motor rotation direction, change the pulse frequency can change the motor rotation speed.
步进电机受脉冲的控制，通过改变通电的顺序可改变电机的旋转方向，改变脉冲的频率可改变电机的旋转速度。
Rationally define the work gear pump speed, gear and the axis of rotation to avoid engaging resonance frequency, can prevent noise intensified.
合理确定齿轮泵的工作转速，使齿轮与轴的转动避开啮合共振频率，可以防止噪声加剧。
It is very important to apply rotation vector algorithm to the GFSINS that how to attain the relative angular displacement and meet its precision and updating frequency.
为了在无陀螺捷联惯导系统中应用旋转矢量算法，如何获得载体的相对角位移、并保证载体相对角位移的精度和更新频率是非常重要的问题。
TACHOMETER generator, a small electric generator for supplying current at a frequency proportional to the speed of rotation.
测速发电机，提供频率与转速成比例的电流的小发电机。
Stepping motor control by pulse, by changing the order of power to change the direction of rotation motor, change the pulse frequency may change the motor rotation speed.
步进电机受脉冲的控制，通过改变通电的顺序可改变电机的旋转方向，改变脉冲的频率可改变电机的旋转速度。
The magnetization and the resonant frequency of the anisotropic ferromagnet are calculated by means of rotation of the coordinate system.
利用旋转坐标系的方法，计算了各向异性铁磁体的磁化强度和共振频率。
The use of frequency convert to regulate the speed of rotation according to the character of mine fan can reach the goal of the modulation of air flow and have a very good effect of saving energy.
根据矿井通风机的特性，使用变频器进行转速调整以达到调节风量的目的，且有很好的节能效果。
The data of polar motion, rotation of the earth and atmospheric excitation function are analysed by the Auto-Regression power spectrum method, and their spectra at low frequency band are obtained.
本文用自回归功率谱方法分析了极移、地球自转和大气激发函数的资料，得到了它们的低频谱。
That are the amplitude changes of rotation speed frequency, and initial phase angle.
并分析了影响其抑振效果的三个因素：转速变化幅值，频率以及初相角。
Mixing: frequency control, scraper, adopting unique revolution plus rotation way, more homogeneous mixing, scraping the pot more thoroughly, can effectively control certain material paste pot.
搅拌：变频调速，刮板独特，采用公转加自转的方式，混料更均匀，刮锅更彻底，可有效控制某些物料糊锅的问题。
In measuring the speed of rotation and the depth of metal crack, PMOSICs and CMOSICs were employed to design two kinds of digital frequency counters.
在对转速和金属裂纹的数字检测中，我们应用pmos和CMOS组件设计了两种数字频率计。
At a receiver, a phase rotation of the received data stream is determined to remove a residual frequency error or to estimate the phase noise.
在接收机处，确定所接收的数据流的相位旋转以去除残留频率误差或者估算相位噪声。
And any slow changes in the broadcast frequency would reveal information about the rotation and movement of the aliens' planets.
而信号波段的任何长期的变化都会显示外星球的自转和公转。
The machine USES frequency conversion device to regulate speed electrically. which is featured by easy operation, steady rotation, safety and correctness.
采用变频调速装置进行电器高速，操作方便，转动平衡，安全准确。
The radars motion and earth rotation generate a Doppler frequency component in the clutter return form any point on the earth-range walking.
由于天基雷达的运动和地球自转，地球上每一点的杂波都产生了附加的多普勒成分——距离游走效应。
The result also indicates that when the seasonal variation of the earth's rotation is around turning point, the frequency of large earthquakes in these regions becomes obviously high.
结果还显示，当地球自转的季节性变化处于转折期时，该地区大地震的频次明显增加。
The filter used a kind of general structure, whose central frequency located nearby the rotation speed to reduce the unbalance vibration.
该陷波滤波器采用通用式结构，其中心频率分布在转子转速附近以抑制不平衡振动。
The cycle frequency of jet fluid swing is half of that of tangential circle rotation.
相应切圆呈周期性旋转，射流摆动也具有周期性，该周期是切圆旋转周期的一半。
The rotation speed is filtered by a frequency which is defined based on a combustion frequency of the engine (10) to obtain a value corresponding to a current torque.
借助根据发动机(10)的燃烧频率所限定出的频率来过滤旋转速度，以得到与目前转矩相对应的值。
Three new aperture methods of speckle photography, one dimensional frequency modulated aperture method crossed aperture method and rotation aperture method are proposed.
本文提出了三种新的散斑照相孔径方法：一维调频孔径法，交叉孔径法和旋转孔径法。
A high power, narrow linewidth single frequency laser diode as one of the key elements of Integrated Optical Rotation Sensor (IORS) is studied.
对谐振式集成光学角速率传感器IORS的关键器件之一——大功率、窄线宽光源进行了分析与实验。
A high power, narrow linewidth single frequency laser diode as one of the key elements of Integrated Optical Rotation Sensor (IORS) is studied.
对谐振式集成光学角速率传感器IORS的关键器件之一——大功率、窄线宽光源进行了分析与实验。
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