每个电波脉冲群仅持续约一百万分之一秒的时间。
Each burst of waves lasts only about a millionth of a second.
本文用熵的概念定量描述了脉冲群雷达信号灵活多变的程度。
The flexibility of a group of pulses of radar signal is described quantitatively withentropy.
相信这些改进对于提高脉冲群抗扰度试验的一致性有非常重要的作用。
I think that these progresses are very important for improving the repeatability of testing result between different generators.
介绍了电能表在进行电快速瞬变脉冲群(eft)抗扰度试验时的一种脉冲个数测量方法。
The electrical fast transient (EFT) disturbance test is one of the most difficult tests, because it is a fast uprising, repetitive pulse group.
在此基础上研制了一台以开关电源作为高压直流电源、以氢闸流管作为主控开关的脉冲群电源。
HV EFT generator is developed, which adopts switching mode power supply as HV DC power supply and hydrogen thyratron as switch.
介绍了多功能电能表开展电快速瞬变脉冲群抗扰性试验的原因，试验的必要性，试验方案和结果分析。
This paper introduces the reason of electrical fast transient-burst immunity test of multifunction watt-hour, the necessity, the method and the analysis about result.
火灾报警控制器应符合GB4717-1993 标准的要求。检测项目有：静电放电；辐射电磁场；电快速瞬变脉冲群。
Control and indicating equipment (c. i. e) meets the requirements of GB4717-1993. The test items include Electrical transient bursts , Electrostatic discharge , and Radiated electromagnetic fields.
消防联动控制设备应符合GB16806 - 1997标准的要求。检测项目有：静电放电；辐射电磁场；电快速瞬变脉冲群。
Integrated fire control equipment meets the requirements of GB16806-1997. The test items include Electrical transient bursts, Electrostatic discharge, and Radiated electromagnetic fields.
另外一群MIT的研究者们最近也开发了一种车用脉冲吸收器，它可以利用汽车运行过程中的上下振动来产生电能。
A group of students from MIT also recently announced the development of a shock absorber for vehicles that USES the up and down motion when driving to generate electricity.
提出并研究了一类具有脉冲干扰和混合功能反应的三种群捕食链模型。
A food chain model of three species with impulsive perturbations and mixed functional response is proposed and studied.
得出多模波导脉冲畸变主要是模式不同的群延迟造成的。
It results that the pulse deformation is caused by group delay of different modes.
另外，还详细介绍了一种新型电解加工电源：用于微小型零件加工的高频群脉冲电解加工电源。
Meanwhile, a new electrochemical machining power supply is introduced in detail-a power supply for high frequency group pulse electrochemical machining used in the micro-machining.
研究超高频群脉冲(UGP)电化学加工中脉冲电压对底部间隙、侧面间隙和极间流场的影响。
Investigates influences of pulses on the bottom gap, the side gap and the electrolyte flow field in ultra-short group pulses (UGP) electrochemical machining.
结果表明，在高频群脉冲电源作用下，选择较高的主脉冲频率，可获得良好的加工质量。
It is indicated from the results that effected by the high frequency group pulse power, higher machining quality is obtained by choosing higher main pulse frequency.
PCNN模型具有相似群神经元同步发放脉冲的特性，适合于图像分割。
PCNN model has similar group neurons synchronization release pulse characteristic, appropriate for the image segmentation.
给出了脉冲电化学加工极间平衡间隙的数学模型，并据此讨论了高频群脉冲电化学加工中，电源主脉冲频率与平衡加工间隙的关系。
Based on the model, the relationship between the main pulse frequency of supply power and the balanceable inter-electrode gap is discussed.
测试结果超过15年的研究，其新的先进技术生产的轻型波电脉冲，每个肌肉群最佳的音调。
The result of over 15 years of research and testing, its new Advanced Wave Technology produces a light electrical pulse that optimally tones each muscle group.
第三章将在对顶级捕食者进行脉冲干扰，即周期性的向食物链中投放定量的顶级捕食者的前提下，研究三种群食物链系统的稳定性。
In chapter 3, in this paper, we investigated a three trophic level food chain system with periodic constant impulsive perturbations for top predator.
提出并研究了一类具有脉冲干扰和混合功能反应的三种群捕食链模型。
In this paper, a three species food chain model with impulsive perturbations e.
提出并研究了一类具有脉冲干扰和混合功能反应的三种群捕食链模型。
In this paper, a three species food chain model with impulsive perturbations e.
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