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PVI automatically and continuously calculatesthe respiratory variations in the plethysmography waveform amplitude.

PVI 自动连续地计算出在脉搏氧饱和度仪的描记图中的波形振幅中的呼吸变异。

The simulation and part of experiment results show that this kind of optical current sensor has a good response waveform and amplitude, frequency characteristics in proper parameters.

仿真和部分实验结果表明此种光学电流传感器在合适参数下具有较好的响应波形以及幅值、频率特性。

Objective To evaluate the relationship between a proximal artery stenosis and downstream Doppler waveform in dogs.

目的 探讨动脉狭窄性病变远端的超声血流动力学变化与狭窄程度的关系。

Based on Lissajou figures, using radius vector deviation to express figure form deviation, the relation between radius vector deviation and signal waveform parameters is analyzed.

以Lissajou图形计算法为基础，用向径偏差来表征图形形状偏差，分析了向径偏差与信号波形参数之间的关系，设计了编码器动态细分误差快速评价系统。

The system can get the signal waveform parameters from the harmonic components of radius vector deviation, plot a curve of interpolation error by delivering magnified moiré fringe photoelectric signal to computer with digital acquisition board.

该系统可以利用数据采集卡，将放大后的莫尔条纹光电信号送入计算机，由向径偏差的谐波成分得到信号波形参数，绘出细分误差曲线。

The main causes of the vibration in pipeline system are in two respects : The first is the vibrant force of the medium acted on pipeline system,i.e.exciting signal,such as the vibrant force caused by the gas flow at the compressor ′ s inlet and outlet and at the ramified and nodel points as well as the action of pig passing through pipeline bridge,etc.;The second is the response to the exciting signal,which is relating to the characteristics of the pipeline system,i.e.the rigidity,support,quality and equipments of the system besides the waveform of the exciting signal.

管道系统振动的原因主要有两方面，一是介质对管道系统产生的振动力，即激发信号，如气流在压缩机进、出口，分支节点部位产生的振动力，清管器通过管桥时对它的作用等；另一方面是对激发信号的响应，其响应除了和激发信号的波形有关外，还和管道系统本身的特征，即系统的刚度及支撑，质量及其配置等情况有关。

A lot of experiments prove that it has relatively high data sampling speed and waveform resolution rata, it provides a new method for the study of the are voltage sudden-changing process.

试验证明该系统具有较高的数据采集速度和波形分辨率，它为电弧电压突变运动过程的深入研究提供了新的分析方法和手段。

Often divided into two types:(1) sine wave oscillator, according to the network oscillation frequency of the different loop selected further divided into RC sinusoidal oscillator, LC sinusoidal oscillators, quartz crystal oscillators, voltage-controlled oscillator, voltage-controlled crystal oscillator and other forms;(2) non-sinusoidal oscillation device, also known as relaxation oscillator, is the use of capacitor charging and discharging and active device (transistor, FET, single-junction transistor, etc.) to generate the pulse-off square wave, rectangular wave, triangle wave, sawtooth wave, or these basic waveforms synthetic waveform and its frequency by the LC time constant charge and discharge circuits to decide.

常分两大类型：（1）正弦波振荡器，根据振荡环路中选频网络的不同，又分为RC正弦波振荡器、LC正弦波振荡器、石英晶体振荡器、压控振荡器、压控石英晶体振荡器等多种形式；（2）非正弦波振荡器，又称张弛振荡器，是利用电容充放电及有源器件（晶体管、场效应管、单结晶体管等）的通断来产生脉冲方波、矩形波、三角波、锯齿波或这些基本波形的合成波形，其工作频率由LC充放电电路的时间常数来决定。

Considering the characters of the waveform of impulsive noise, on the base of robust statistics, the thesis uses the robust statistical function mending the customary adaptive algorithm based on second order statistic, applies it to the system identification problem.

考虑到α-稳定分布波形的性质，在稳健估计理论的基础上，利用稳健估计函数改进了原有的基于二阶矩的自适应算法。

Thanks to this scheme, the phase, root-mean-square value, frequency, and waveform of the output sinewave voltage can be controlled precisely and the system has excellent steady-state performance, fast dynamic response performance, fast and reliable current cut-off protection function.

提出了一种新的适应"模块化"要求的高性能逆变电源控制方案，该方案是一种带有输出电压相位控制及负载电流前馈控制的多环反馈控制方案，能对输出正弦波电压的相位、有效值、频率、波形进行精确控制，使系统具有良好的稳态、动态特性以及快速可靠的截流保护功能。

Bob Eckert has been chairman and chief executive of Mattel for eight years.

美泰董事长兼首席执行官鲍勃·埃克尔特在任已8年。

The outlook for honors and disgraces carries on and surpasses the traditional outlook for honors and disgraces theoretically, and carries on and develops the theory of construction of socialist mora...

社会主义荣辱观的提出在理论上是对传统荣辱观的一次继承和超越，是对社会主义道德建设理论的继承和发展，在实践上有利于形成良好的社会风尚。