脉冲

Through this discussion, we can clearly understand: research by the delay or pulsive problems and the existence of solutions with the conclusions of stability and pulsive delay variable conditions are inseparable.

通过讨论，我们可以清晰地看到：所研究的时滞或脉冲问题解的存在性及稳定性的结论与时滞变量和脉冲条件密不可分。

A cross shaped sum-difference network is constituted by microstrip ramose coupler with compact structure and calculated by ADS,while the 8×8 rectangular patchs,which is optimized by HFSS on basis of the method of parameter load and so on,form the transmiting/receiving antenna.

使用ADS优化设计了一种结构紧凑的&十&字形和差网络，并且使用参数加载等方法，在HFSS中仿真出一个8×8的微带矩形贴片天线阵列作为收/发天线，和差网络和微带天线阵列组成单脉冲天线阵。8×8天线阵列、和差网络和馈电系统在同一平面上，所以此天线阵列与传统单脉冲阵列相比体积更小，结构更紧凑，对该天线阵列进行了研制和测试，测试结果符合设计要求。

The results indicate that there are vortexes, shocks and expansion waves outside the multi-tube PDE. In addition, the results might be referrible to research the characteristics of the flow-field outside multi-tube Pulse Detonation Engine.

计算结果表明，此多管脉冲爆轰发动机黏性外流场中存在旋涡及多道相互作用的激波与膨胀波，该结果对多管脉冲爆轰发动机外流场特性研究具有一定的参考价值。

The phase of the clock signal inputted to a panel is made regulatable on the outside in such a manner that the delay amount of the sampling pulses is compensated based on the feedback pulse.

根据反馈脉冲，可在外部调节输入面板的时钟信号相位，以补偿采样脉冲的延迟量。

Through a single shot experiment powered by a constant voltage charging device,it is found that when discharging in N2,the generator has the same output waveforms for both isolation configurations;but when discharging in SF6,it has a faster rise time for the resistively isolated configuration than that for the inductively isolated configuration,and the reason for this phenomenon was analyzed preliminarily.

通过恒压源充电的单次实验发现，发生器在氮气(N2)中工作时，两种隔离方式的输出脉冲波形基本一致，然而在六氟化硫(SF6)气体中工作时，电感隔离型相对于电阻隔离型的输出脉冲前沿较慢；对其原因做出了初步分析。

At first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu-lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band-pass filter, alternating amplifier, phase sensitive demodulatorn, pulse-width modulation, frequency scale circuit, moment current generator. Finally, using the graphics program language LabV-IEW which is designed for testing field especially by NI accomplishes the solfware design of testing system,realized the testing functions.

首先对加速度计及其测试技术的发展历史和现状，液浮摆式加速度计的工作原理和数学模型等作了简要的介绍，然后确定了以二元调宽脉冲再平衡测试回路为设计方案，并从控制理论的角度进行了分析，着重研究了系统中各部分的传递函数，利用系统开环传递函数分析了系统的稳定性，同时设计了系统的校正网络；分析了二元调宽脉冲再平衡测试回路的分辨率、采样约束以及测试精度等基本问题，并按照系统分析的结果设计了包括前置放大、带通滤波、交流放大、相敏解调、脉宽调制、频标电路以及力矩电流发生器等测试系统各部分硬件电路，验证了电路的正确性，最后按照测试系统的要求，采用了美国NI公司专为测试领域所开发的虚拟仪器工具——LabVIEW作为测试软件开发工具，利用该图形化编程语言完成了测试系统软件部分的设计，实现了测试功能。

Pulse numeration method and pulse period method are introduced in the paper, the precision of these two methods and the relation of precision and rotative speed are analyzed, based on the analysis a compounding method that is suitable for the whole speed range with higher precision is advanced.

分析了脉冲计数法与脉冲周期法的原理与实现，测量精度与转速的关系，提出在不同的速度段采用不同的速度测量方法，以保证在整个调速范围内都可以得到精度较高的速度参数。

Its metering principle is that the rotation of premary instruments' roter sents out magnetic pulse signal,then the received signaI by the flow sensor monitor changes into electric signal, Through microcomputer integrating, data processing, after error sectional revision the result displayed.

该流量计的测量原理是：一次表转子旋转发出磁性脉冲信号，由流量传感探头将接收到的脉冲信号转变为电信号，经微电脑积算、数据处理、误差分段修正后显示出。

Transmission of Gaussian light pulse in sinusoidally dispersion-compensated system is studied by numerically simulating the solution of non-linear Schroedinger equation.

从含非线性薛定谔方程出发，通过数值模拟，研究了高斯光脉冲在正弦型色散补偿系统的传输，得到结论：当系统的二阶色散的平均值为零时可得到高斯光脉冲的稳定传输。

A high resolution ranging method is described utilizing a novel modulated waveform, hereafter referred to as coherent burst modulation. The laser is sinusoidally modulated for a brief period of time and then is off for a much longer period of time.

在脉冲相位式激光测距中提出采用连续发射的正弦调制脉冲信号提高发射激光的峰值功率以提高测程，但发射激光的平均功率被保持很低保证了发射激光对人眼的安全。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。