This paper discusses the design and implementation of a kind of high-speed frequency-hopper.
本文讨论了一种高速跳频器的设计与实现。
It is first time to adopt the high-speed frequency spread microwave network for China Seismological Bureau.
采用扩频微波方式组网在地震系统还尚属首次。
American supervisors could still act to curb their speed; Britain's Treasury recently commissioned a study on the effect of high-frequency traders on markets.
美国监管者将仍然会采取行动来限制他们的交易速度；英国财政部最近委托他人做一项关于市场中高频操盘手影响力的研究。
The design of target doppler frequency measurement circuit is very important in phase coded MMW radar system because of the high measurement precision requirement of target speed.
在某相位编码毫米波雷达系统中，要求很高的目标速度测量精度，因而目标多普勒频率测量电路的设计比较重要。
With high frequency, it is suitable for some metal material marking in high speed.
激光频率高，更适合一些金属材料的打标，打标速度更快。
The design of target Doppler frequency measurement circuit is very important in phase-coded MMW radar system because of the high measurement precision requirement of target speed.
在某相位编码毫米波雷达系统中，由于对目标速度测量精度的要求很高，因此目标多普勒频率测量电路的设计也具有比较重要的地位。
High-performance data acquisition is needed in some high speed and high precision measurements when signal measurements, image manipulation and audio frequency signal process are taken.
在信号测量、图像处理、音频信号处理等一些高速、高精度的测量中，都需要进行高性能数据采集。
Arcing: The RFI (radio frequency interference) generated by high voltage switching may disrupt high speed logic circuits.
电弧：高压切换产生的RFI(射频干扰)可能会干扰高速逻辑电路。
In addition, the RFI (radio frequency interference) generated may disrupt high speed logic circuits in the system.
此外，由此产生的射频干扰(RFI)可能会中断系统中的高速逻辑电路。
Design, products of high density frequency, cloth speed, high yield of single class.
变频设计，制品密实度高，布料速度快，单班产量高。
Finally, a brief introduction to the applications of the very high speed frequency divider is given.
最后简单介绍了超高速分频器的应用情况。
Meanwhile, PWM inverters using high switching frequency device that shortens the rise time of PWM output pulse have been widely applied in high-speed AC driving locomotive.
同时，高速交流传动机车广泛采用高开关频率器件的脉宽调制（PWM）逆变器，使得逆变器输出脉冲具有陡上升沿。
The direct digital frequency synthesis (DDS) is a kind of new frequency synthesis method. It has high frequency resolution, fast frequency switching speed, etc.
直接数字频率合成(DDS)是一种新的频率合成方法，具有频率分辨率高、切换速度快等优点。
The technology of DDS has many values, such as the speed of hopping frequency is very high, the resolving power of frequency is also high.
这种直接数字式频率合成技术(DDS)具有频率值转换速度快、频率值分辨率高、控制频率的相位值连续等优点。
The main merits of DDS are high resolution and fast frequency switching speed, but the defects of low output frequency and bad spurious performance restrict the application of DDS.
DDS的主要优点是其高分辨率和高捷变速度，但是其较低的输出频率和较差的杂散性能制约了其应用。
Owing to the limited frequency of the internal high-speed counter of PLC, the peripheral unit of PLC is used for PLC-based frequency measurement of hydraulic turbine governors.
基于可编程序控制器（PLC）的水轮机调速器，受PLC内部高速计数器最高计数频率的限制，频率测量大多通过PLC外部单元来实现。
Faddy short messages refer to those short literal messages which have a high frequency of copy, a fast speed of popularity, a vast area of spreading and a great power of influence.
时尚短信是指复制频率高，流行速度快，传播面积广，影响力度大的文字短信，它已成为现代人最为重要和流行的一种交际时尚。
It has great advantages of frequency stability, high frequency resolution, speed of frequency switching, simple analysis of phase noise and spurious, small size and low power.
其具有频率稳定度好、频率分辨率高、频率切换速度快、相位噪声和杂散干扰分析相对简单、体积小、功耗低等优势。
On the aspect of hardware, they include: narrow pulse and high frequency ultrasonic sensor's design, high frequency signal generator and receiver's design, high speed data completed sampling's design.
因此本文还详细阐述以下内容：硬件方面采用了高频窄脉冲信号发生及接收放大电路、高速数据采集电路；
Cascade multilevel inverter has extensive application in the high voltage variable frequency modulated Speed System for its numerous advantages.
级联式多电平逆变器因其具有众多的优点，在高压变频调速领域中得到广泛应用。
This paper presents a novel open-loop speed control method for induction motors that provides high output torque and nearly zero steady-state speed error at any frequency.
提出了一种新颖的感应电机开环速度控制法，在任一频率下，它不但能使电机输出高的力矩，而且使稳态速度误差几乎等于零。
High speed frequency water cooling spindle, high precision, low noise, long life.
高速变频水冷主轴，高精度，低噪音，寿命长。
For the characteristic of high speed and frequency, its design is much different from the common motor.
高速和高频的特性，决定了高速电机的设计与普通电机有较大的不同。
The FM response magnitude and phase variation effects laser on the high speed frequency switching.
FM响应的大小和相位变化影响激光器的高速频率交换。
In high precision variable frequency speed adjusting system, system's performances are guaranteed by accurate motor parameters.
在高精度变频调速系统中，准确的电动机参数是系统性能的保证。
This paper introduces the theory and design method of digital intermediate frequency receiver, and based on high speed DSP and FPGA establish hardware process platform.
介绍了一种数字中频接收机的原理与设计方法，并以高性能DSP、高速fpga为基础，搭建硬件处理平台。
The non-sinuous oscillation of the mold is used to reduce the mold friction force and stick type breakout, and to lower the oscillation frequency for high speed casting.
应用结晶器非正弦振动技术可以降低结晶器摩擦阻力，减少粘结性漏钢，同时大幅度降低高拉速时的结晶器振动频率。
The sampling system that sample this high frequency signals is a high-speed data acquisition system.
对此例高频信号进行采样的系统，就是所谓的高速数据采集系统。
The sampling system that sample this high frequency signals is a high-speed data acquisition system.
对此例高频信号进行采样的系统，就是所谓的高速数据采集系统。
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