模型的各段经优化后可使模型与人体动脉系统的输入阻抗的幅频值和相频值相符合。
Values of each segment of this model were adjusted to give an optimum match to aortic input impedance both in values of modulus and phase frequencies.
并且通过对分压器传递函数的相频和幅频特性进行理论分析，提出一种分布电容补偿的方法。
By theory analysis of divider transfer function of magnitude-frequency characteristics and phase-frequency characteristics, a new method equalizing stray capacitance could be conclude.
设计数字高通、带通、带阻滤波器，要求描绘滤波器的脉冲响应以及滤波器的幅频和相频响应曲线。
Design of digital high-pass, band pass, band-reject filter, the filter impulse response described demand as well as the filter amplitude-frequency and phase frequency response curve.
本文导出了多径反馈型六阶有源带通滤波器电压转移函数，计算出了该滤波器幅频、相频理论特性曲线。
In this paper we develop the voltage transfer function of the six order active passband filter with multiple path feedback and calculate the theoretical values for A-F and P-F response.
完成了系统控制软件和FPGA控制逻辑设计，实现了幅频和相频测试，参数存储，Q值计算等数据处理功能。
It completes the system control software and FPGA control logic design, and achieves the data-processing function of amplitude and phase-frequency testing, parameter storage, calculation of Q-value.
文中对所建立的系统进行了相频和幅频特性的理论分析和实验，合理地解释了此系统的迟滞曲线随输入信号频率变化的原因。
The phase-frequency and amplitude-frequency responses of the system were analyzed and experimented, which reasonably explains why the hysteretic curve changes with input signal frequency.
本文给出了一种计算无噪声时具有正弦鉴相器的二阶锁相环捕捉特性的新方法，求得了每个差频周期的平均角频率牵引量。
A new method is presented for analyzing the acquisition behavior of second-order PLL with sinusoidal phase detector in the absence of noise.
利用电力系统三相交流电压过零点和高速数字频率合成器解决了跳频系统中同步和快速频率合成的两个关键问题。
The zero-crossings of the AC voltage and digital frequency synthesizer are used in solving the two main problems in frequency hopping system-synchronization and fast frequency synthesizing.
极化子是电子与光频支纵声子相耦合系统的准粒子，是凝聚态物理学中的一个重要课题。
Polaron is the quasi particle of the electron-longitude optical phonon coupling system, which is an important subject in the condensed matter physics.
残留相偏估计部分采用利用导频进行相偏跟踪的方法，并采用补偿后估计的结构来增加估计的精度。
The phase error estimation part utilize one pilot tone to track the phase error and uses the estimation after compensation structure to improve precision.
该方法采用基于熵的小波包最佳基选取准则，对局部损伤信号进行自适应小波包分解，将分解结果显示于时—频空间即相平面上。
The L F signals are transformed by entropy based on wavelet packet algorithms for best basis selection, and the results are displayed in time- frequency space namely phase plane.
只有从频散的斯通利波和弯曲波中提取出相慢度，才有可能进一步求准地层渗透率和横波慢度等参数。
Only when phase slowness is extracted from the Stoneley wave and the flexural wave, can the parameters of formation be obtained exactly, such as permeability and shear slowness.
混频器主结构采用两只对称的单平衡混频器组合，通过上下两路信号移相来达到消除镜频的目的。
The main structure of the mixer adopts two symmetrical single-balanced mixers, with phase-shifting of the up and down path signals to eliminate the image frequency.
通过对LPC(线性预测编码)方法提取语音信号共振峰进行的研究表明，采用相-频特性与对数幅-频特性同样能提取语音信号共振峰。
The study on speech signal formant abstracted by LPC shows that it can also be abstracted by adopting phase-frequency characteristics and logarithmic amplitude-frequency characteristics.
闪频式现场整机动平衡仪是一种通过测相测幅进行整机动平衡的装置。
The flash frequency instrument for field whole machine balancing is a whole machine balancing equipment by measuring the phase and amplitude.
本文发表了宽带匹配网络的一种新的计算机辅助设计方法—幅相实频技术。
Presented here is the amplitude-phase real frequency technique, a new procedure of the computer-aided synthesis of broadband matching networks.
比相法是一种高精度的频标比对方法。
Phase comparison is a high precision comparing method for frequency standard.
介绍了采用置频等待、数字本振及微处理机技术实现非相参捷变频自适应雷达频率控制的方法。
This paper introduces a method to realize frequency control of a noncoherent frequency-agility adaptive radar by using frequency setting and waiting, digital local oscillator and micro-processor.
研制的谐振式软开关弧焊逆变电源，主电路采用新型LCL结构，控制系统选用恒频移相调脉宽控制方案。
The resonant soft switching inverter arc welding power source uses LCL type structure in the main circuit, and selects phase shifting pulse wide modulation technique in the control system.
本文根据时钟数字移相原理，提出了一种新的瞬时测频方法，适用于捷变频雷达测频系统。
In the paper, a novel instantaneous frequency measure method, which is applicable for the frequency measure system of frequency hopping radar, is presented according to the digital phase-shift theory.
建立了包括电流控制电路、功率驱动电路以及五相混合式步进电动机在内的恒频斩波恒总流驱动系统的完整的数学模型；
Mathematical model of the system, included the current control circuit, power driving circuit and five-phase hybrid stepping motor is established.
小波变换具有良好的空频特性，而且能够很好地匹配人类视觉系统，同时也与新的JPEG2000标准相兼容。
Wavelet transform has good air-frequency characteristics, but also a good match human visual system, but also with the new JPEG2000 standard compatible.
老眼作花花作晕，多惭猿鹤频相问。
Flower for the halo for old eyes, multi-frequency phase ashamed ape Crane asked.
系统采用基于矢量运算的恒频积分算法，设计三相三线并联型有源电力滤波器PAPF。
The system adopts Unified Constant-Frequency with Vector Operation, to design 3-phase 3-wire parallel active power filter(PAPF).
死区时间的合理选择是保证移相定频控制的全桥零电压开关DCDC变换器零电压开关状态的必要条件。
Proper selection of the switching dead time of the lagging arm is necessary for ensuring the ZVS operation of the phase shifting FB ZVS DC DC converter.
提出基于频相的直接数字频率合成技术（DDFS）实现采样的跟随时钟。
Offering direct digital frequency synthesis (DDFS) based on the frequency -phase to achieve the following sampling clock.
数字调制解调技术在数字通信中占有非常重要的地位，常用的数字调制有：移频键控(FSK)和移相键控(PS K)等。
Digital mod technology in the digital communication occupies a very important position, commonly used digital modulation are: frequency shift keying (FSK) and phase-shift keying (PSK), and so on.
介绍了一种五相混合式步进电动机恒频斩波恒总流驱动新技术，及新五边形绕组联接方式，并给出了样机的实验结果。
This paper presents a new driving technique of 5-phase hybrid step motors and a new pentagon connecting pattern, the experimental results are given.
CM是一个以梯型相体及气孔结构的三分频全音域系统，它装配了一个10吋低音喇叭、一个4吋中音喇叭，采用一个1吋圆锥形高音单元。
The PA-310 CM is 3-way full-range system in a vented trapezoidal enclosure featuring one 10 "woofers, a 4" horn loaded MF, equipped with one 1 "cone tweeter."
CM是一个以梯型相体及气孔结构的三分频全音域系统，它装配了一个10吋低音喇叭、一个4吋中音喇叭，采用一个1吋圆锥形高音单元。
The PA-310 CM is 3-way full-range system in a vented trapezoidal enclosure featuring one 10 "woofers, a 4" horn loaded MF, equipped with one 1 "cone tweeter."
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