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- phase velocity modulation 相位速度调制
- Group and Phase Velocity - Java applet. 有可随使用者调整的群速度与频率。
- An electron tube used to amplify or generate ultrahigh frequency by means of velocity modulation. 速调管一种用速度调节的方法放大或产生超高频率的电子管
- The remaining factor in(7, 8.3)is the carrier wave and its phase velocity is c. (7; 8.;3)中剩下来的一个因子就是载波,其相速度是c。
- The research is based on the structure and principle analysis of digital direct current velocity modulation system of the mine hoister. 本课题通过对矿井提升机全数字直流调速系统的结构和原理分析,结合模糊控制理论的基础上。
- Each small peak in the carrier would travel to the right with the usual phase velocity. 载波中的每个小峰都以通常的同相速度向右方运动。
- The electrical machinery velocity modulation control procedure, you may establish the parameter through this procedure, was allowed to control the speed through the feedback! 电机调速的控制程序,你可以通过这个程序来设定参数,通过反馈就可以控制速度了啊!
- Equation(4) permits a simple deduction of the relation between the phase velocity and the period. 用方程(4)可简单推导相速度和周期的关系。
- The automatic control system of Assel mill involves the programmable controller,the direct current velocity modulation system,position controller,and the electronic cam. Assel轧管机的自动控制系统涉及可编程控制器,直流调速系统,辅机控制等。
- With the aqueous phase velocity increasing, the mass transfer flux increased, but the recovery extraction decreased. 由回收率的大小可以看出,电泳萃取分离技术是一种很好的处理染料水的方法。
- Must realize the direct current machine velocity modulation first to transform the alternating current into the cocurrent, this needs the leveling circuit. 要实现直流电机调速首先要把交流电转换为直流,这就需要整流电路。
- Through simulation on velocity modulation system of water wheel generator,indicated control effect of this control mode surpassed the conventional PID control. 通过对水轮机调速系统进行仿真,表明了该控制方式控制效果优于常规PID控制。
- The phase velocity basically tells you how fast a pure sine wave (with a single frequency) moves. 相速度可以告诉我们一个纯正弦波的传播速度。
- This study applied the Split-Spectrum Processing (SSP) technique to measure the ultrasound phase velocity and BUA. 摘要:本计画主要研究利用所发展之SSP技术来量测超音波经过骨头之波衰减与速度散度之情形。
- Uses the advanced frequency conversion speeder to carry on the electrical machinery velocity modulation, the ease of operation, the rotational speed may move, safe and accurate. 采用先进的变频调速装置进行电机调速,操作方便,转速可调,安全准确。
- A dispersion equation of the tunneladder TWT was derived,and the small signal gain and the working phase velocity were computed. 计算结果表明:沟道梯型结构行波管每周期的增益高,带宽窄;
- Affected by higher Rayleigh wave modes in the surface wave field,the effective phase velocity obtained by spectral analysis of surface waves(SASW. 由分层介质表面两不同点响应互谱分析(SASW)得到的有效相速度并不对应于面波基阶模态相速度,它与波场中高阶模态能量分配比例有关。
- Explained with emphasis uses the BPTS series frequency changer to the engine bed main axle velocity modulation plan transformation,finally has produced the engine bed movement performance condition. 重点说明了利用BPTS系列变频器对机床主轴的调速方案改造,最后给出了机床运行的性能状况。
- Author suggests that it is necessary to design experiments to measure the phase velocity of de Broglie wave and to study the wave-particle duality deeply. 建议设计实验测量德布罗意波的相速度 ;深入研究波粒二象性 .
- The working principle and performance characteristic of asynchronous motor cascade velocity modulation are analyzed,and the inner feedback cascade velocity modulation is introduced systematically. 分析了异步电动机串级调速的工作原理与性能特点,介绍了内反馈串级调速电机及其装置的系统结构。