impulse wave

The modal experiment on the flexible space truss with the hexahedral structure is performed and investigated under the impulse excitation of haif sin wave by the method of interior force vibration activation.

采用半正弦冲击波形，通过内力激振的方法对六面体空间柔性桁架结构进行了模态实验研究，得到了系统的前四阶固有频率和模态振型。

互联网摘选

Differences of echo characteristic between impulse radar and continuous wave radar are analyzed, and the potential of UWB impulse for Super-Low-Altitude target-detection is remarked.

分析了超宽带冲激脉冲雷达与连续波雷达的不同的回波特性，指出冲激脉冲雷达对超低空目标探测的潜在优势。

互联网摘选

In this process, only some similar impulse wave can be seen on the phosphor screen, so it is very difficult to distinguish the defect property.

在焊缝检测中，超声波仪的荧光屏仅能看到大致相同的脉冲波形，要在微小差别的波形中，分辩出缺陷的性质，就比较困难。

互联网摘选

Development of contactless commutation controller by computer for DC impulse wave spot welder

直流冲击波点焊机无触点换向微机控制器的研制

互联网摘选

The scatterer may be a 3-D body with curved surface, and the transmission structure may be direction-changeable and a branched one with multiple dielectrics. The incidence can be either single frequency sine-wave or arbitrary impulse wave.

散射体可为具有弯曲表面的三维物体，传输结构可为多介质的变向和分支型导波结构，时间波形可为单频定态波也可为任意脉冲波。

互联网摘选

Based on the frequency parameters, a new transformation method to determine the response to lightning impulse wave on transmission line with corona is proposed in this paper.

本文在频变参数基础上提出了一种计算电晕线路响应特性的新变换方法，并用其计算了线路的雷电波响应。

互联网摘选

Objective : To observe the effect of impulse wave via acupoint on chronic atrophic gastritis ( CAG ).

目的: 观察脉冲毫米波经穴治疗慢性萎缩性胃炎 ( CAG ) 的疗效.

互联网摘选

The impulse measurement errors of the XZF 900 precision resistor divider and the ZRF 1200 low damped capacitor divider are given from exponential wave tests and calculations.

根据指数波试验和计算，文中给出了XZF-900精密电阻分压器和ZRF-1200低阻尼电容分压器的冲击测量误差。

互联网摘选

A contactless commutation controller based on STD microcomputer for DC impulse wave spot welding machine is introduced.

介绍了以STD微型计算机为控制核心的直流冲击波点焊机无触点换向控制器。

互联网摘选

After the problems concerning the background matching as well as the state-of-the-art having been solved, the reflected impulse wave form with 2-2.5 cycles were obtained in the water. The radiation or reception were, in the large, directionless.

在解决背衬匹配和其它工艺问题后，在水中得到了2～2.5个周期的反射脉冲波形、辐射（或接收）方向基本上无方向性。

互联网摘选

Then, according to the theory, simulated the vibration response of a single-freedom system using the elastomer damper or not. under the impact of a continuous sine wave and the impulse wave.

其次以某一单自由度振动系统为研究对象，根据理论推导，模拟使用胶泥吸能器前后该系统对于持续正弦波冲击和单位脉冲冲击的响应情况。

互联网摘选

The paper proposes this distinguish method by analyzing the regular impulse wave.

文章通过分析常见焊缝缺陷的波形及其特征，提出了鉴别缺陷性质的方法。

互联网摘选

Use high-precision long scan oscillograph and pressure sensor to automatically display the impulse wave and pressure respectively.

用高精度的慢扫描示波器和压力传感器能自动显示脉冲波形和压力。

互联网摘选

The wave velocities of whole rock samples in triaxial experiments under different stress paths, and the wave velocities of rock samples with saw cut in uniaxial experiments were measured by ultrasonic impulse method.

用超声脉冲法测量了完整岩石样品在三轴实验中不同加载途径下的波速，和拼合岩石样品在单轴实验中的波速。

互联网摘选

Virtual origin of impulse current shock wave induced by flyer impact

冲击电流波视在原点飞片撞击产生冲击波

互联网摘选

The results show that the higher the stiffness of the restraint layer, the stronger the impulse wave induced by laser and the greater the deformation of the sheet metal;

实验结果表明：约束层的刚度越大，激光诱导的冲击波力越大，板料的变形量越大；

互联网摘选

The said technology adopts intelligent control for mixing ratio and concentration of fuelgas and air, utilizing the high energy impulse wave generated from explosive burning of acetylene gas to clean and blow the ash deposits on the heat transfer components.

该技术采用智能控制燃气与空气的混合比例及浓度，利用乙炔气体爆燃放出的高能量冲击波，清理吹扫传热元件上的灰垢。

互联网摘选

The influence of impulse duration, direction, and damage position, extent on the velocity wave at the impulse action point is addressed.

研究了脉冲持续时间和作用方向、损伤位置和程度对脉冲作用点速度波的影响规律。

互联网摘选

The oscillating impulse wave was converted to high voltage direct current after double voltage commutated filter, and the output value of high voltage direct current was gained through adjusted the direct current power.

产生器产生的振荡脉冲波升压后由倍压整流滤波获得直流高压，调节直流电源得到各直流高压输出值。

互联网摘选

First, the time domain solution of the system with Rayleigh damping excited by a short time impulse is obtained by the decoupling numerical simulation technique of near field wave motion.

首先，用近场波动数值模拟解耦技术求得在短时脉冲作用下采用Rayleigh阻尼系统的时域解；

互联网摘选