- 更多网络例句与超高频相关的网络例句 [注:此内容来源于网络,仅供参考]
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Mostly it is only the VHF and UHF aficionado who has to be greatly concerned about these properties.
主要是这仅仅是高频和超高频爱好者谁,必须十分关注这些物业的价值。
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Abstract] Objective To assess the treatment effects of loop electrosurgical excision procedure for the treatment of chronic cervicitis.
摘要] 目的评价超高频电波刀治疗慢性宫颈炎的效果。
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Based on the high frequency power amplifier,a class E resonant high frequency DC/DC and a phase-shifted control strategy are proposed in this paper,the converter based on the idea can heighten switching frequency,reduce the loss of the system,widen the range of output.
以高频功率放大器为基础,提出了一种超高频E类谐振DC/DC变换器的移相控制策略,基于这种思想的变换器可以提高开关频率,降低系统损耗,拓宽输出范围。
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By detailedly deriving the equations of the input impedance, transconductance, voltage gain and noise figure, an inductive degeneration common emitter low noise amplifier which is used in an ultra high frequency receiver chip is designed.
通过详尽推导电感负反馈共发射极低噪声放大器的输入阻抗、跨导、电压增益以及噪声系数的表达式,讨论并设计了一个应用于超高频接收芯片的低噪声放大器。
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The principle of partial discharge detection of gas insulation switchgear with ultra high frequency is discussed.A 220 kV GIS bus bar cavity is adopted as a test object to design and simulate four typical defect models in GIS.The PD signals produced by the four models are obtained via the PD detection system,which is developed by the authors on the basis of the narrow band UHF method.
为了提高GIS运行的可靠性,笔者简要说明了超高频法检测GIS局部放电的原理,并在实验室以一段220 kV电压等级的GIS母线为试验对象,设计和模拟了GIS中典型的4种局部放电模型,并使用自主研发的超高频窄带检测系统对其局部放电信号进行检测。
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High Frequency and Ultra-high Frequency Financial Data is a brand new research area in financial econometrics.
金融高频数据和超高频数据的研究是金融计量学的一个全新的研究领域,研究的基本动因在于,一是对金融高频数据和超高频数据本身所具有的特征的关注,二是对理解金融市场的微观结构来说相当重要。
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A new approach for pattern recognition of ultra-high frequency signals of transformer partial discharge based on multi-scale analysis of wavelet packet and grid dimensionality is proposed, in which the multi-scale transform of wavelet packet is used to extract wavelet coefficients of UHF PD signals and by means of improving difference box-counting method the grid dimensionality of multi-scale wavelet coefficients is calculated and the multi-scale grid dimensionality is taken as the characteristic quantity that is used in the recognition of UHF PD signals.
提出了一种基于小波包多尺度分析和网格维数的变压器局部放电超高频信号模式识别的新方法,采用小波包多尺度变换提取局部放电超高频信号在多尺度上的小波系数,通过改进差盒计数法计算多尺度小波系数的网格维数,并将多尺度网格维数作为特征量用于局部放电超高频信号的识别。
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This invention relates to a circular small UHF antenna with high dielectric constant and its processing method, among which, the UHF antenna characterizes that 1,it is composed of a radiation plate, a feed point and a medium chip, 2, the radiation plate is closely adhered to the top surface of the medium chip, the bottom surface is the metal ground face, the chip and the radiation plate is rectangle or square, 3, the feed point is at the 1/3 place of the diagonal line of the rectangular or square radiation plate apart from the top point.
本发明涉及一种高介电常数圆极化小型超高频天线及其制作方法。UHF天线特征在于(1)所述的超高频天线是由辐射贴片、馈电点和介质基片组成;(2)辐射贴片紧贴在介质基片的上表面,介质基片的下表面为金属接地面;介质基片和辐射贴片呈矩形或正方形;(3)馈电点位于矩形或正方形的辐射贴片的对角线离顶点的1/3处。其制作方法是采用ε≥38高均匀性陶瓷基片,再结合丝网印刷技术完成厚膜焙银后形成辐射贴片,然后再圆极化。具有制作工艺成熟、体积小及使用灵活等特点。
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The signal frequency received by the antenna is very high, normally it can exceed one GHz. Usually the sample card can not collect so high frequency signal, and it is not necessary to collect the total signal because what we need is the peak value of the signal, and then to know the severe degree of the PD of Transformer relatively .
天线接收的超高频信号频率很高,可达到上G,要采集此信号对采集卡要求太高,而且完整地采集如此高频的信号意义也不大,我们需要的是超高频信号的峰值特征,从而了解变压器内部局部放电的相对严重程度。
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Surprising with the introduction of UHF they continued to function quite well in picking up UHF as well.
惊奇以他们继续起作用相当很好在采摘超高频超高频的介绍。
- 更多网络解释与超高频相关的网络解释 [注:此内容来源于网络,仅供参考]
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ultra high frequency:超高频特高频特高频
ultra high frequency 超高频 | ultra high frequency 超高频特高频特高频 | ultra high frequency 特高频
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ultra high frequency:超高频超高频
ultra-high frequency 超高频 | ultra-high frequency 超高频超高频 | ultra-high frequency 特高频
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ultra-high frequency receiver:超高频接收机
ultra-high frequency oscillator 超高频振荡器 | ultra-high frequency receiver 超高频接收机 | ultra-high frequency test receiver 超高频试验接收机
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ultra-high frequency receiver:超高频接收机,特高频接收机
ultra-high frequency oscillator 超高频振荡器 | ultra-high frequency receiver 超高频接收机,特高频接收机 | ultra-high frequency test receiver 超高频试验接收机
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ultra-high frequency oscillator:超高频振荡器
ultra-high frequency nuclear magnetic resonance spectrometer 超高频核磁共振波谱仪 | ultra-high frequency oscillator 超高频振荡器 | ultra-high frequency receiver 超高频接收机
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ultra-high frequency generator:超高频发生器
ultra-high frequency correlator 超高频相关器 | ultra-high frequency generator 超高频发生器 | ultra-high frequency jammer 超高频干扰器
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ultra-high frequency transmitter:超高频发射机
ultra-high frequency test receiver 超高频试验接收机 | ultra-high frequency transmitter 超高频发射机 | ultra-high frequency wave meter 超高频波长表
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ultra-high frequency converter:超高频变频器
ultra-high frequency cathode ray tube 超高频阴极射线管 | ultra-high frequency converter 超高频变频器 | ultra-high frequency correlator 超高频相关器
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ultra-high frequency jammer:超高频干扰器
ultra-high frequency generator 超高频发生器 | ultra-high frequency jammer 超高频干扰器 | ultra-high frequency nuclear magnetic resonance spectrometer 超高频核磁共振波谱仪
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SHF signal generator:超高频信号发生器
SHF resonance frequency meter 超高频谐振式频率计 | SHF signal generator 超高频信号发生器 | SHF test receiver 超高频测试接收器