脉冲波

结果显示受检患者中35%能在双极食管导联中清晰记录到位于电脉冲波后的P波；

It showed that on bipolar esophageal lead , P wave after electric pulse could be recorded clearly in 35 % patients ;

用推迟势计算了脉冲波声场的声压公式，克服了Fourier分析中对频率求和的困难。

By Employing the retarded potential in calculating sound pressure in the pulse - wave sound field . difficulties of frequency summation in Fourier analysis can be overcome .

高频PWM脉冲波传输引起电机端子过电压的研究

Research on motor terminal over-voltage caused by high-frequency PWM pulse

本文讨论了平面、柱面和球面的波阵面的光声脉冲波的上升时间和传播距离的关系，并给出了相应的B／A的表达式。

The relations between the rise-times of photoacoustic pulses with plane , cylindrical and spherical wave fronts and propagation distance are discussed and the corresponding expressions for B / A are given .

ecm脉冲波，包括普通型号和远程版本，将不再对那些本来就对电子战免疫的舰船产生作用。

ECM burst , both normal and remote , no longer affects ships supposedly immune to electronic warfare .

CDFI及脉冲波多普勒（PW）监测胎儿脐带绕颈血流参数及临床意义

The Monitoring of the Blood Flow Parameter and Clinical Application of Cord Around Neck by CDFI and PW

B组：0.3W／cm2脉冲波固定法5min；

B : a pulse wave , fixed way , 0.3 W / cm2,5 minutes ;

本课题设计的芯片电路包括：三角脉冲波产生电路，GMP脉冲信号组合电路，BPSK调制电路，UWBLNA。

This proposed chips include : Triangle impulse generator , GMP pulse combination circuit , BPSK modulation circuit , UWB LNA . 5 .

稀疏脉冲波阻抗反演在YX油田开发中的应用

Application of sparse impulse impedance inversion in YX oil field

D组：1.2W／cm2脉冲波移动法10min；

D : a pulse wave , removal way , 1.2 W / cm2,10 minutes ;

结果表明，如果至少能在一种介质中存在Rayleigh波，且其波速小于两种介质中的最小极限速度，则滑移脉冲波就可以存在。

It is found that the slip pulse may exist if the Rayleigh wave arises at least in one medium with a speed below the minimum limiting speed of two media .

软件部分采用C语言基于.net框架，可实现三种形式信号输出，包括：正常人入睡脑电信号、催眠音乐和典型波形刺激，其中典型波包括正弦，锯齿波，脉冲波等。

In Software part , it uses of C # language based on . Net framework , to achieve three forms output including : normal sleep EEG , hypnotic music and the typical waveform stimulation which includes a typical sine wave , sawtooth , pulse and so on .

实验仿真结果验证了相关应用的有效性。四、以动力学特性分析的结果为基础，对神经元的脉冲波传播特性进行了分析，并将理论结果应用于多约束QoS路由求解。

Simulation results verify the validity of the applications . Fourth , based on the analysis of the dynamic characteristics , analyzed the pulse wave propagation characteristics of neurons , and applied the theoretical analysis results to multi-constrained QoS route problem .

目的探讨应用脉冲波组织多普勒显像技术所测Tei指数评价新生儿持续性肺动脉高压的右室功能。

Objective To investigate the value of Tei index derived from pulsed wave-tissue Doppler imaging in evaluation of right ventricular function in newborns with persistent pulmonary hypertension .

该假设总结出SN1979C中的物体为最年轻和最明亮的“脉冲波霎星云”和已知最年轻的中子星。

This would make the object in SN 1979C the youngest and brightest example of such a " pulsar wind nebula " and the youngest known neutron star .

随着数字化控制技术的发展，SPWM脉冲波的生成和逆变器的全数字化控制渐趋方便，并可使逆变器的输出波形的稳态精度、暂稳态响应、可靠性等得到进一步提高。

With the development of digital control techniques , the production of SPWM and digital control of inverters become convenient , which makes the output wave 's steady-state precision , transient and steady state response , reliability improved .

目的探讨脉冲波多普勒组织成像技术（PW-DTI）定量评价慢性肺心病患者右室功能的临床价值。

Objective To evaluate the clinical value of Doppler tissue imaging ( DTI ) in detecting right ventricular function in chronic pulmonary heart disease .

方法测量32例持续性肺动脉高压的新生儿及20例健康新生儿的右心常规超声指标，同时记录三尖瓣环的脉冲波组织多普勒显像技术频谱图，测量相关时间间期，并计算出Tei指数。

Methods A total of 32 newborns with persistent pulmonary hypertension and 20 healthy newborns were included . Some traditional ultrasonic parameters of right heart , time parameters and Tei index were measured and compared .

给出非均匀分层、各层各异非球形粒子随机介质在脉冲波入射下矢量辐射传输方程（VRT）的Mueller矩阵解，数值模拟了极化后向散射。

The Mueller matrix solution of vector radiative transfer for inhomogeneous random media of non spherical scatterers under a pulse incidence is presented . Co polarized and cross polarized bistatic scattering echoes can be numerically simulated .

下位机有连续控制图（CCC）组态设计和逻辑梯形图（RLL）编程-流量控制组态、压力控制组态、温度控制组态，PWM脉冲波调制组态等。

The software of under computer has several parts such as the design of CCC chart configuration , ladder logic chart ( RLL ) programming-flow control configuration , pressure control configuration , temperature control configuration and PWM pulse modulation configuration and etc.

利用Stroh公式，Fourier分析和奇异积分方程技术研究了两各向异性弹性半空间光滑接触可分离界面上滑移脉冲波的存在及其传播特性。

The existence and propagation of a slip pulse at a smoothly contact separable interface between two anisotropic elastic half spaces is discussed in details based on the Stroh sextic formalism together with Fourier analysis and the singular integral equation technique .

在心尖四腔心切面，脉冲波多普勒记录舒张期二尖瓣口血流，测量舒张早期峰值血流充盈速度（E）、心房收缩期峰值血流充盈速度（A）、E/A比值及舒张早期血流充盈减速时间（DT）。

From the apical four chamber view , diastolic mitral flow was recorded using pulsed Doppler and peak filling velocity in early diastole ( E ), peak filling velocity in atrial contraction ( A ), E / A ratio and early diastolic filling deceleration time ( DT ) were measured .

基于磁场积分方程研究Alpha-stable非高斯分布的金属材料表面的时谐波、超宽带脉冲波的电磁散射特性。

The magnetic field integral equation ( MFIE ) is formulated to study the electromagnetic scattering from Alpha-stable non-Gaussian metallic material surface with a time harmonic wave and a UWB pulse wave incidence .

目的采用脉冲波多普勒组织成像技术（PW-DTI）观察急性心肌梗死（AMI）患者PTCA+支架术前、术后梗死局部室壁运动变化，定量分析左心室局部心功能。

Objective To analyze regional left ventricular function before and after PTCA + Stent in acute myocardial infarction ( AMI ) patients , pulsed wave Doppler tissue imaging ( PWDTI ) was used to observe changes of myocardiac motion of regional wall .

方法采用2MHz脉冲波多普勒探头在兔腹主动脉检测由左肾动脉输入的气泡栓子和兔全血凝块栓子。

Methods A pulsed 2 MHz Doppler probe was used to detect the air and clotted whole blood emboli which were introduced into the rabbit aorta via the left renal artery .

DTI脉冲波技术（DTI-PW）在人类已证实是评价心肌运动及左室功能的良好技术，可以对心肌运动进行定量评价，但是能否评价大鼠节段心肌运动及功能，在文献中未见报道。

DTI pulse wave technique ( DTI-PW ) has been proved a good index to evaluate myocardial movement and left ventricular function in human . Whether DTI-PW can be used to evaluate segmental myocardial movement and function of rat is seldom reported .

数值模拟结果表明，在重复率为10GHz情况下，可以获得的最小脉宽约为13ps，其消光比大于20dB，脉冲波型接近sech2孤子波型。

The results of numerical simulation show that the narrowest optic pulse with a duration of 13 ps and repetition of 10 GHz can be obtained , whose extinction ratio is greater than 20 dB and time domain shape is close to sech 2 soliton .

弱起伏介质中界面脉冲波的互相干函数

Mutual coherence function for lateral pulse wave in weak fluctuating medium

比较了连续波声场和脉冲波声场的分布特性及异同点。

The acoustic field of the pulse wave source is measured .

空心圆柱横截面内超声脉冲波声场的可视化研究

Visualization Study of Ultrasonic Pulse Fields on Hollow Cylinder Cross Section