A frequency comparator compares the frequency of a reference clock with that of an output clock and outputs a frequency comparison signal.
频率比较器比较基准时钟和输出时钟的频率，并输出频率比较信号。
We further propose a possible fast hybrid fractal encoding algorithm which combines existing fast search methods, statistical normalization and frequency domain comparison.
接着进一步提出一种可能的快速混合分形编码的算法，该算法将快速搜索方法、统计规范化、频域比较结合起来。
Finally, a comparison about performance is made among up sliding filter, down sliding filter and none sliding filter in suppression of frequency shifting.
最后比较了上滑频滤波器、下滑频滤波器、以及无频移滤波器在抑制频率移动的性能。
The method of instantaneous value comparison for source current control of unity power factor rectifier possesses advantages of simplicity as well as valid restriction for maximum switching frequency.
在单位功率因数整流器中，利用瞬时值比较法来控制电源电流，不但控制简单，还可有效限制器件的最高开关频率。
Methods High-frequency ultrasonic findings in 17 cases with PVNS were analyzed and a comparison between surgical and pathological results was made.
方法分析17例PVNS的高频超声表现，并与手术病理结果进行对照分析。
Melting characteristics of MF induction furnace have been expounded with comparison with that of mains frequency induction furnace as well as concerns in operation.
论述了中频感应电炉的特点，与工频感应电炉熔炼特性的比较及其操作注意事项。
Based on observed signals analysis and comparison in time - domain and frequency -domain, the method of distinguishing interfere signals and abnormal electromagnetic radiation signals is given.
基于对观测信号的时域、频域分析的比较，给出了干扰信号与异常电磁辐射信号的判别方法。
Through comparison, it shows that at the same value of frequency and size, the far field of hexagonal piston is more uniform than that of circular piston.
结果表明，与圆形、方形活塞的辐射远场相比，在声波频率、活塞面积相同条件下，六边形活塞声源的辐射远场相对比较均匀。
The comparison dealts mainly with the frequency of drop forming, the velocity of drop flying, the drive signal and the complexity of drive circuit.
其中主要就墨滴形成频率，墨滴飞行速度，驱动信号及驱动电路等关键参数进行了比较。
The relation between initial susceptibility and frequency has been studied by the comparison of inertia time to Debye time.
在惯性驰豫时间与德拜时间的对比中，研究了初始磁化率随频率的变化关系以及随约化温度的变化关系。
Finally, the paper makes comparison and choice of the evaluating standard of the power frequency electric field, and brings forward more objective standard.
最后，本文对工频电场的评估标准进行了比较与选择，并提出了较为客观的依据标准。
The frequency of mutation is about 3% between other testing group and comparison of group.
而其他两试验组与对照组间突变频率在3%左右。
Starting from the characteristics of hysreresis comparison control, the principle of hysreresis comparison control and the formula of actual switch frequency are gotten.
从滞环控制方式的特点入手，详细分析了单相滞环比较控制方式的原理并计算得出了实际的器件开关频率计算式。
By comparison with simple shape targets, the echo strength of the complex targets versus frequency and range is more complex.
与简单形状目标相比，复杂目标的回声强度随频率和距离的变化更为复杂。
A comparison study on two situations, with and without coal load on a steel plate, has been carried out by using audio and ultrasonic frequency.
应用声超声及超声穿透试验对钢板上有无煤负载两种情况进行了对比研究。
Simultaneity by comparison it with two-phase and four-Phase hybrid stepping motors, also displayed its advantages of higher motor action frequency and Iower torque p...
同时它与二相和四项混合式步进电动机相比较也显示了具有较高的电机运行频率和较小的转矩脉动的优点。
Based on sampling theorem, by the comparison of three sampling scheme, and the conclusion is drew that the black box of medium frequency digital is the most reasonable choice.
以采样定理为基础，通过对三种跳频电台采样方案的比较得出结论，黑盒中频数字化方法是目前最合理的选择。
Simultaneity by comparison it with two-phase and four-Phase hybrid stepping motors, also displayed its advantages of higher motor action frequency...
同时它与二相和四项混合式步进电动机相比较也显示了具有较高的电机运行频率和较小的转矩脉动的优点。
Phase comparison is a high precision comparing method for frequency standard.
比相法是一种高精度的频标比对方法。
Bief introduction to the application of frequency instrument in traditional and remade saving Energy Plastic welder and some Analysis and comparison have been done to it as well.
介绍了变频器在传统注塑机上节能改造的应用情况，并进行了方案分析和比较。
Then the accuracy of approximation, regularity of many-knot splines interpolation method and frequency property of the interpolation kernel are worked out for comparison.
然后分析了多结点样条插值方法的逼近精度、正则性、插值核函数的频域特性。
The comparison of digital frequency divider and traditional analog frequency divider shows that the former is more superadded.
比较了数字分频器与传统模拟分频器，说明数字分频器更具优点。
They use entropy and spatial frequency to evaluate the fusion result of their method and perform a comparison with the Laplacian based and the wavelet based image fusion methods.
最后利用熵和空间频率对该方法的融合性能进行了评估分析，并与基于拉普拉斯变换和小波变换的图像融合方法进行了比较。
A nonlinear model of op amp based on Volterra series theory in complex frequency domain is proposed. The comparison of theory and experiment is given.
本文提出了一个运算放大器复频域非线性模型的建立方法，并且将该方法所建立的运算放大器模型与实验测量的传递函数特性作了比较。
Simulation results show that, to achieve the same performance, the number of rf chains can be reduced by more than 37.5% in comparison with joint time - frequency beamforming algorithm.
仿真结果表明，与时频联合波束成形算法相比。相同性能要求下，其需要的射频模块的个数可减少37.5%以上。
The primary outcome was death from any cause for the comparison between the combination regimen and placebo; the frequency of exacerbations, health status, and spirometric values were also assessed.
所记录的原始结果包括由比较联合给药组和安慰剂组所得各种原因引起的死亡，以及对恶化的频率、健康状况和肺活量检查数值。
The drive module and STOP signal conversion module are sub-frequency, select and comparison circuit based on the transducer's launch and reception principles.
驱动电路与STOP信号转换电路是根据换能器的发射接收原理设计的分频、选择、比较电路。
Through the comparison of the test results of reinforced masonry and non-reinforced masonry under low frequency cyclic loading, the seismic behavior of the reinforced masonry was studied.
通过组合配筋砖砌体墙片与无筋砖砌体墙片的低周反复加载试验对比，研究了组合配筋砖砌体墙片的抗震性能。
It makes a comparison of the performance differences of the BP neural network and the RBF neural network in predicting frequency-hopping signals.
比较了BP神经网络和RBF神经网络在跳频信号频率预测中的性能差异。
A comparison of the two displaying methods of cooling-load rate distribution, that is, time frequency chart and probability distribution curve, is made.
对时间频数图、概率分布图这两种负荷率分布的表示方法进行了比较。
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