查询词典 pulse curve

The foundation of this system provides a good reference to promote the standardization and intelligence of the overhaul and maintenance of vacuum switches. This paper develops a special HF pulse power supply for internal pressure estimation, which achieves the output of HF-HV sinusoidal pulse wave whose frequency and amplitude can be modified respectively, and meets the design requirements according to the results of Simulink simulation and practical experiments. With the help of AT89S52, this paper designs an I~2C serial bus based signal detection system for peak value signal acquisition of HF pulse currents, which communicates with the upper computer by asynchronous serial communication for uploading the data. In the upper computer, a human computer interface is developed by Matlab software, whose functions are to do some computation and graphic display, such as calibrating the relation curve of vacuum degree and peak value of HF pulse currents, vacuum degree computation, and vacuum lifetime evaluation analysis basing on grey forecasting model as well as making relative suggestions.

本文研制了用于真空度检测的高频脉冲电源，通过Simulink仿真和试验检验其满足设计要求，实现了电压幅值和频率独立可调的正弦波高频高压脉冲输出；利用以AT89S52为核心基于I~2C串行总线的信号检测系统实现高频脉冲电流峰值信号的采集，通过异步串行通信实现单片机与计算机之间的数据通信，将检测数据传至上位机；在上位机利用Matlab开发人机交互界面，实现相关数据处理和图形显示，包括真空度——高频脉冲电流峰值关系曲线标定、真空度数值计算、基于灰色预测模型的真空寿命评估分析和提出相应决策建议。

Finally, using cross section method, the equationof product crash boundary curve of back peak zigzag pulse is deduced.

这种方法有两个明显的缺点：不仅费时费工，而且不便分析产品破损边界曲线的物理意义和把握这条曲线的几何特征。

Based on the nonlinear dynamical equation of product packaging system,the shock spectra and the damage boundary curve of tangent nonlinear packaging system under the action of half-sinusoid pulse are obtained using a numerical method,and the influence of various factors on shock response is discussed.

采用数值求解单自由度产品包装系统的非线性动力学方程，得到了半正弦波冲击下正切型非线性包装系统的冲击谱曲线和边界破损曲线，讨论了相关参数对它们的影响

The molten Al-5wt%Cu alloy was treated by electric pulse,and the influence of pulse electric field on its cooling curve was investigated with thermal analysis method.

对A l-5wt%Cu合金熔体进行了电脉冲处理，采用热分析方法研究了脉冲电场对该合金凝固冷却曲线的影响。

We accordingly propose to take the marginal decay curve as a criterion to check if an observed pulse could be taken as a candidate suffered from the Doppler effect.

第二个工作是，基于Qin模型我们研究了Kocevski et al。(2003)统计发现的γ暴FRED脉冲的上升宽度与全宽存在的线性关系。理论分析表明，纯粹多普勒效应就可以产生这种线性关系。

Otherwise, wide pulse and slow falling edge can cause the errors of surface recombination velocities and bulk lifetime extracted from the photoconductive decay curve.

否则脉冲光过长的脉宽和下降沿将对光电导衰减曲线中进一步分离出的表面复合速度和少子体寿命结果造成误差。

The sixth, this thesis synthetically utilizes many kinds of modern statistical method and the econometrics model to research how policy event affect stock market influence, especially it has successfully applied the condition VaR model, Hesin test, BDS test, recursion BDS test, VAR model and pulse response analysis, EGARCH model and news response curve in the empirical analysis, and obtains some regular conclusion.

六、将多种现代统计方法和经济计量方法综合运用于政策事件影响中国证券市场波动问题的研究中，特别是成功地应用了条件VaR模型、Hsieh检验、BDS检验、递归BDS检验、经济计量模型、VAR模型及脉冲响应分析、EGARCH模型及其消息反应曲线等方法，得出了若干有意义的结论。

The simulation results show that a characteristic saw-toothed velocity is generated in vertical, and a lower limit of laser repetitive pulse for stable ascent is defined; In lateral pass, higher frequency of laser pulse can produce quicker reversion and smoother trajectory, and with the increase of slope of lift curve, the lightcraft can be stabilized in shorter time.

结果表明：在垂直方向，光船上升速度呈锯齿状，且存在脉冲频率下限；在侧向，激光脉冲频率越高，回复速度越快，回复曲线也越光滑，升力线斜率的增加能够使光船以更短的时间趋于稳定。

Photoelectron rise and decay signal curve of various emulsion samples, which is exposed by 35ps short pulse laser, is measured. The corresponding relation of photo-absorption saturation curve and the photographic characteristic curve is obtained, and farther the quanta efficiency of free photoelectron is also obtained.

本文从卤化银材料的微观光作用动力学的角度出发，依据微波吸收原理，设计并建立了纳秒量级卤化银材料光生电子信号检测装置，在超短脉冲激光作用下，测量了不同材料的光电子产生与衰减信号曲线。

This research uses high sensitive piezoelectric sensor for developing a sensitive sphygmograph to detect anthropic pulse and to determine parameters to diagnose physiology of human. From spectrum of pulse, the analysis processes are to determine the high pass frequency used in the analysis, uses the IIR Buttorworth filter to remove the noise, to calculate the Hermite curve for filtering the oscillation parts caused by breathe, then to calculate the parameters in strength, time and angle domains from the processed signal to study their correlation with the physiology of the studied experimenters and compared the results with the machine from the market.

中文摘要本研究采用高灵敏度压电感测元件，发展敏锐的脉搏感测仪器，量测人体手腕脉搏波形，计算其中所包含之参数来探讨与研究人体生理状况相关性的适用性；藉由分析脉搏频谱成份并使用Buttorworth滤波器过滤高频杂讯，再使用Hermite方程式去除手腕低频振动杂讯，由过滤后的脉搏讯号萃取振幅强度、波形上升与下降时间、上升与下降角度等参数，经由统计分析探讨与人体生理之情况相关性，并将所获得指标结果与市售仪器所量测之数据变化进行比较。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷