High frequency pulse width modulation power control systems can be realized using semiconductor switches.
高频脉冲宽度调制电力控制系统，可以实现用半导体开关。
Stepped frequency pulse signal was applied in microwave nondestructive testing, which was advanced by this paper.
提出了将步进频脉冲信号应用于微波检测。
High frequency pulse current machining and fine finishing can improve parts' machining accuracy and surface quality.
高频脉冲电流加工及光整加工技术能提高零件的加工精度和表面质量。
A kind of high frequency pulse electrical source at the need of electromagnetic ultrasonic experiments is presented.
针对电磁超声实验对脉冲电源的需求，研制了一种高频脉冲电源。
In the paper, the high frequency pulse tube coolers (PTCs) developed for 80 K and below temperature application are introduced.
首先介绍了作者开发的可用于80K及以下温区的高频脉冲管制冷机。
This paper will analyze the discharge high-frequency pulse theory and its application in JiangJin Power Supply Bureau's project.
对放电高频脉冲检测原理的装置进行了分析，并在重庆电力公司江津供电局工程中进行了应用。
Experiment investigation on multi-bypass and fixed phase shifter comparison in single-stage high frequency pulse tube cryocooler;
本文采用数值模拟和实验研究的方法对高频脉冲管制冷机的重力特性进行了对比研究。
The results show that high frequency pulse electric current can refine and crinkle graphite flake, decrease the dimension of eutectic cell.
实验结果表明，在高频脉冲电流作用下铸铁石墨片细化，石墨片变得卷曲，共晶团尺寸减小。
The steady principle of the inverter with a high frequency pulse AC link and the unipolarity phase shifting control strategy are investigated.
该文深入分析研究了高频脉冲交流环节逆变器稳态原理特性与单极性移相控制策略。
Timer can use a different frequency pulses of different frequency pulse amplification by the speaker drive circuit filter, will emit different tones.
利用定时器可发出不同频率的脉冲，不同频率的脉冲经喇叭驱动电路放大滤波后，就会发出不同音调。
Experimental results show that low frequency pulse compression and channel match method can be used in shallow water sound channel to improve the SNR.
实验表明，脉冲压缩可有效增加浅海低频声脉冲的传输距离，信道匹配可用于消除多途对脉冲信号检测信噪比的影响。
The voltage force at a certain frequency, which is generated from a high frequency pulse power supply, is enforced to the two electrodes of the vacuum stove.
这就需要一个高频脉冲电源对真空炉的两个电极施加一定频率的电压场。
A circuit topology family of inverters with high frequency pulse AC link and a double polarities phase-shifting control strategy are proposed and deeply investigated.
提出并深入研究了高频脉冲交流环节逆变器电路拓扑族及其双极性移相控制策略。
Objective:To investigate the antitumor effect of Low-Frequency Pulse Forcusd Ultrasound(LFPFU) exposure in human cell line COC1, and to clarify its probable mechanism.
目的 ：研究低频脉冲聚焦 超声波对人卵巢癌细胞株COC1的抗肿瘤作用 ，并探讨其诱导细胞凋亡的分子机制。
Matching characteristics among linear compressor, regenerator, pulse tube and inertance tube have large impact on the performance of high frequency pulse tube cryocooler.
线性压缩机、回热器、脉冲管以及惯性管的耦合特性对高频脉冲管制冷机的整机性能有很大的影响。
Through theoretical analysis and numerical simulations, the walk-off effect between sum-frequency pulse and pump pulse caused by Group Velocity Mismatch (GVM) was discussed.
通过理论分析和数值模拟研究了在双脉冲泵浦情况下的级联和频与差频的二阶非线性效应，探讨了走离效应对波长转换的影响。
The main purpose is digital processing of the input intermediate frequency pulse signals, drawing the detail characters of the pulse signals, so that distinguishing me from enemy.
其主要目的是对中频输入脉冲信号进行数字化处理，提取信号的细微特征，从而达到识别敌我目的。
A circuit topology family of inverters with high frequency pulse AC link and a double polarities phase shifting control strategy are proposed and deeply investigated in this paper.
提出并深入研究了高频脉冲交流环节逆变器电路拓扑族及其双极性移相控制策略。
When applied high frequency pulse current on CC. billet, the centerline pipe and centerline crack in billet are eliminated, and the central segregation and middle crack are improved.
用高频电场处理连铸小方坯，可以消除铸坯中心缩孔和中心裂纹。改善中心偏析和中间裂纹。
The producing methods of various threaten signals are researched. And the model of the dense and complex radio frequency pulse signals is founded on the analysis of single radar signal.
本文研究了各种威胁信号的产生方法，在单部雷达辐射信号分析的基础上建立了密集，复杂射频脉冲信号的模型。
Use single stage version to reach the temperature of 20 K is a difficulty for high frequency pulse tube cooler (PTC). Multi-stage version is a popular method to reach the low temperature.
单级高频脉冲管制冷机直接降低到20K以下温区存在很大困难，采用多级方案是高频脉冲管制冷机获得更低温度的主要方法。
When high frequency pulse current is applied to CC billet, the centerline pipe and centerline crack in the billet are eliminated, and the central segregation and central crack are reduced.
进行了连铸工业试验，效果明显：铸坯中心缩孔和中心裂纹被消除，中心偏析和中间裂纹也得到降低。
It will give patients treatment by means of the amplified amplitude modulating wave current that can be obtained form medium frequency amplitude modulated by the low frequency pulse signal.
它将有关低频脉冲信号对中频调幅后，利用被放大的调幅波电流对人体进行治疗。
Brazing quality and product reliability are both increased as using high frequency pulse microplasma arc heating process for assembly brazing of cathode and photoetching grid of electron tube.
采用高频脉冲微束等离子弧做为电子管阴极和光刻栅极装配钎焊工艺的热源，提高了钎缝质量和产品的可靠性。
By counting the number of such X-rays while scanning the frequency of the laser pulse, the team could make a very precise measurement of the photon energy required to drive the 2s-2p transition.
通过统计所发出X光的数量，然后对照激光脉冲的频率，测量小组能得出一个非常精确的测量值，从2s能级到2p能级跃迁所需的量子能量。
Every molecule gives off its own unique vibrational frequency in response to the kick from the short pulse.
每个分子都会对短脉冲的轻击产生应激，发射出独有的振动频率。
The front panel controls allow the user to set pulse width and frequency independently, or to set frequency and duty cycle, which then sets the pulse width accordingly.
前面板控制允许用户设置脉冲宽度与频率或先设置频率与占空因数，再设置脉冲宽度。
Four white LEDs on the interface pulse at different frequencies, and the system can use the frequency of the brainwave evoked to determine at which LED the user is staring.
四个白色led在不同频率上闪烁，系统可以通过脑电波确定是看着哪个频率的led。
Four white LEDs on the interface pulse at different frequencies, and the system can use the frequency of the brainwave evoked to determine at which LED the user is staring.
四个白色led在不同频率上闪烁，系统可以通过脑电波确定是看着哪个频率的led。
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