脉动

本文将B样条神经网络用于有源压力脉动衰减系统。

In this paper , B spline neural network is introduced into active attenuator for pressure pulsation .

基于MATLAB的复合齿轮泵流量脉动特性的仿真

MATLAB-based flow pulsation characteristic simulation on compound gear pumps

这个城市随着音乐和激情而脉动

The city pulsated with music and excitement .

快速实现基于FPGA的脉动FIR滤波器

Fast Implementation of the Systolic FIR Filter Based on FPGA

北京地区Pc3地磁脉动的统计分析

The Statistical Analysis of P_c3 Geomagnetic Micropulsation in Beijing

实践证明：脉动燃烧控制对象是带延迟的一阶惯性环节，因此对控制对象采用常规的PID控制策略完全可行。

The furnace is an inertial system with delay , so PID control can be used .

W火焰锅炉燃烧脉动现象研究分析

Investigation on Pulsating Combustion of W-type Flame Boilers

本文然后讨论了脉动矩阵乘法器的设计，最后讨论了3D几何图形加速引擎的结构。

Then a systolic array Multiplier is discussed . At last , structure of the 3D accelerating graphics engine is analyzed .

五种PWM方式对无刷电动机换相转矩脉动的分析和比较

Analysis and Comparison of Commutation Torque Ripple of PM Brushless DC Motor on Five PWM Modes

对计算结果进行FFT（FastFouriertransform）变换，获得了记录点的压力脉动频率，计算结果与实测结果吻合很好；

The results were analyzed by FFT ( fast Fourier transform ) to determine the pressure oscillation frequencies at different points .

脉动指数（PI）、阻力指数（RI）、SD参数增高反映了新生儿脑血管阻力较高。

An increased PI , RI and SD reflected a high cerebral resistence in newborns .

采用输出脉动补偿改善PFC电路动态性能的研究

Reserch on Improvement of Dynamic Characteristics of PFC Circuits Based on Output Pulse Compensation

狐狸座BW星脉动周期变化的再分析

Re-Analyzation about the Variation of the Pulsation Period of BW Vul

一种控制SRM转矩脉动减小的算法

An Algorithm for Controlling SRM Torque Ripple Reduction

我们还讨论了磁声重波与地磁微脉动之间的关系，沿着重力场方向向下传播的磁声重波，可能直接引起赤道附近的Pc1磁脉动。

The magneto-acoustic-gravity waves propagating downwards along the direction of gravitational field may produce directly the PC 1 magnetic pulsation near the equator .

在CCC中，采用了电流双幅值斩波技术，有效地降低了低速区扭矩的脉动。

Dual width of electric current cut technology in CCC was adopted .

应用POD法识别作用在结构表面的脉动风荷载的时频域特性。

The proper orthogonal decomposition ( POD ) technique was applied to identification random wind pressure time or frequency domain specific property .

得到了Reynolds应力、脉动热通量和Prandtl数的分布。

The distributions of Reynolds shear stress , fluctuation heat flux and turbulent Prandtl number were obtained .

Helmholtz型脉动燃烧器的研制

Development of Helmholtz-type pulse combustor

不合这两点之间的线，相一致，如果中子星旋转，你会看到x射线脉动，当热点在这里。

And if the axis of rotation doesn 't coincide with the line through the two hot spots , if the neutron star rotates , you 're going to see x-ray pulsations .

利用压力脉动模型对长白山阔叶红松林冬季土壤释放的CO2在雪层中的扩散过程进行模拟，进而估算土壤呼吸。

The diffusion of CO2 released from soil through the snow layer in the broadleaved pine forests in Changbai Mountain was simulated with pressure-pumping models , and soil respiration was estimated .

本文对连续波半导体激光器端面抽运的Fabry-Perot腔掺Yb~（3+）双包层光纤激光器的自脉动输出行为进行了研究。

Self-pulsation behavior of Yb3 + - doped double clad fiber lasers formed in Fabry-Perot cavities and end-pumped by CW laser diode ( LD ) is investigated .

I（th）变化率低的激光器，外推室温连续工作寿命8×10~4小时以上。还研究了自脉动和功率扭折现象等。

For lasers of lower changing rate of threshold current , at the extrapolated room temperature , the CW operating lifetime is over 8 × 104 hrs , self-pulsating and kinking of lasing output have also been studied .

目的介绍一种进行ICG清除试验检测肝储备功能的新方法-脉动色素浓度测定法（PDD法），评价其可行性和实用性。

Objective To introduce a new method of indocyanine green clearance test for measuring hepatic reserve function and evaluate its feasibility and practicability .

以新安江两等跨箱形混凝土拱桥为工程背景，采用大型有限元分析软件ANSYS建立三维有限元模型并对其进行动力特性分析，并用实桥脉动测试结果进行校核；

ANSYS was used to establish a finite element model of the box-shaped concrete arch bridge with two equal spans , and an analysis of dynamic property was preformed , and measured impulse data was used to verify the analysis result .

但转矩脉动特性有所不同，非线性电感模型较分段线性电感模型准确。因此非线性电感模型适用于分析电机的转矩脉动特性DTG阻力矩实验测试方法研究

But the torque ripple characteristics are different and the nonlinear modeling method is more accurate , it is helpful in the study of torque ripple problem . Experiment Method on Resistance Torque of DTG

在这个基础上，研制出了一种新型的脉动无级变速器DSV400无级变速器。

According to the proposed mechanism , a new type of pulsating stepless variable transmission , DSV-400 , has been successfully developed .

本文使用数值计算软件CFD研究了圆管中单相水脉动紊流的流动和传热特性。

In this thesis , the study on pulsatile turbulent flow in a pipe was carried out using computational fluid dynamics ( CFD ) . The simulation used CFX commercial software to investigate the flow characteristics and heat transfer for single phase water flow .

对模拟所得的大跨度桥梁节点风速时程统计分析表明AR模型可有效地模拟具有空间相关性、时间相关性的节点脉动风速时程，模拟精度、速度和计算稳定性均满足实际工程应用要求。

Statistical analysis results of numerical wind speed time series show that AR model is efficient in simulating nodal wind speed time series which has time and space correlativity , and that the simulation precision , simulation efficiency and calculation stability answer the needs of practical engineering .

利用水下爆炸的光学可见，在浅水水体外将CCD高速摄像机实拍和图像处理技术引入了气泡脉动参数的测试研究，得到了0.3gDDNP装药的气泡半径随时间变化轨迹和脉动周期。

The shoot of high speed video camera and the technology of image manipulation are applied to test and study bubble pulsation parameters according to the optical visibility of underwater blasting . The track of bubble diameter changing with time and the pulsation period of 0.3g DDNP charge are obtained .