查询词典 acoustic pressure

High-speed digital frequency synthesizers and acoustic pulse pressure device information table, principle, the device note.

高速数字频率综合器及声表脉压器件资料，原理介绍，器件说明。

Depending on the acoustic emission during the hydraulic pressure test,it could be determined whether the defect was originally formed or not with the help of Kaiser effect principle.

近年来，声发射技术在各方面都得到了很大发展，包括声发射的源机理和波的传播研究以及检测系统的研制和应用范围的扩展等[2]。

Using matlab, the acoustic reflected pressure from a submerged elastic/piezoelectric bi-laminated plate is calculated.

本文采用matlab 软件，对水下弹性/压电双层板的声波反射进行了数值研究。

The following are the expressions for the mean pressure set up at the detection plate and for the time of the signal to progagate from the radiator to the detector:这里是1个公式,省略） where Re is the real part of the expression appearing within the braces, 0 is the density of the medium, vo is the amplitude of the vibrational velocity, c is the speed of sound in the medium, d2 = I +(r/zcos 8, z is the distance between the emitting and receiving plates, B is the angle between the axis of the acoustic channel and the axis of the tube, r = vro/c, v is the flow speed of the fluid, d is the diameter of the pipe, m is the circular frequency, k is the wave number, where a is the radius of the plate (this is taken as the same for the emitting and receiving plates for simplicity, but there is no difficulty in discussing plates differ~mg in radii),,~ is the vibrational frequency of the emitting plate, and The triple sums in the expressions for N~ and N2 may be neglected if the flow speed is low, since the contributions for these become negligible.

以下的表情为代表的压力设置在检测板甲，手持骑枪和时间的信号 progagate从散热器排出到检测器(这里是1个公式、省略)。在什么地方才是真正的出现在背带，表现为0密度的吗当时的媒介的振幅振动速度、c是声音的速度中、d2 =我+ r / z，8、z是距离的发射和接收板、B之间的角度对声信道和轴轴管，r = vro / c，v的流体的流动速率公式，d 管直径的圆频率，m，凯西是波数公式* n，一个是半径的板(这是作为相同的发射和接收吗为了简单，但板板是毫无困难地讨论不同半径)、镁-，~的振动频率的发光，。总结了三倍的表达方式和N2 ~能忽略的流量速度低，因为这些变得微不足道的贡献。

The following are the expressionsfor the mean pressure set up at the detection plate and for the time of the signal toprogagate from the radiator to the detector:这里是1个公式,省略） where Re is the real part of the expression appearing within the braces, 0 is the density ofthe medium, vo is the amplitude of the vibrational velocity, c is the speed of sound in themedium, d2 = I +(r/zcos 8, z is the distance between the emitting and receiving plates, B is the angle between the axis of the acoustic channel andthe axis of the tube, r = vro/c, v is the flow speed of the fluid, d is thediameter of the pipe, m is the circular frequency, k is the wave number,where a is the radius of the plate (this is taken as the same for the emitting and receivingplates for simplicity, but there is no difficulty in discussing plates differ~mg in radii),,~ is the vibrational frequency of the emitting plate, andThe triple sums in the expressions for N~ and N2 may be neglected if the flow speed islow, since the contributions for these become negligible.

以下是表达式平均压力为定于检测板和为信号时间progagate从散热器到探测器：（这里是1个公式，省略）假如再是出现在大括号表达式的实部，0是密度中期，沃是速度的振动幅度，C是健全的速度中，D2中=我+的导向8，z是对之间的距离发射与接收板，B是声之间的通道轴角该管的轴，R =中心内大多分为/荤，v是流体的流动速度，，D是管道直径，m是圆频率，k是波数，的其中一盘是半径（这是为重点，同样的发射与接收为le简单板，但没有讨论板的困难，在半径不同毫克），，是发光板振动频率，和在N的表达式的三重总结和N2可以忽略，如果流速低，因为这些变得微不足道的贡献。

The analysis of lake experiment's data validate the supposing model of vector sensor and some theories, including the dropping noise-field analysis, the distance testing, the biasing phenomenon of bearing-time course and the spectrum comparison between acoustic intensity and pressure.

湖试数据的实验分析，验证了矢量传感器的模型假设及其部分理论和现象，包括"雨滴"噪声场分析、"拉距"实验分析、方位时间历程的有偏现象以及声强谱与声压谱的比较，其间提出的5种谱级信噪比的估计方法，适用于实验环境的评估。

Fly key Founded in 1985, are National Machinery Industry, the Ministry of Electric Power Industry Ministry sentinel production enterprises, specializing in the production of a variety of voltage fuses, surge arresters, isolation switch, load switch, a portable short-circuit grounding line, high-pressure acoustic ray electroscope, high pressurerod and other products.

衡水飞键电力器材有限公司创建于1985年，是国家机械工业部，电力工业部定点生产企业，专业生产各种电压等级熔断器，避雷器，隔离开关，负荷开关，携带型短路接地线，高压声光验电器，高压拉闸杆等系列产品。

The leakage of pressure pipes can be monitored on line with acoustic emission technology, so the leakage sources can be detected in time.

应用声发射监测技术可以实现对压力管道泄漏的监测，及时发现泄漏源。

The simulated results show that a stable acoustic standing wave is formed in bubble column under the geometric arrangements and the transducer boundary condition employed in this study. Due to the nonlinear behavior of the resonant wave and viscosity of water, there is a temporal shift at pressure nodes.

模拟结果表明，在本研究所用的几何布置和换能器与时间相关的速度入口边界条件下，反应器中形成了一个稳定的驻波声场；由于波的非线性以及水的粘性，压力波节点呈现出轻微的时间漂移性。

The acoustic emission inspection and location principle of large vertical normal pressure storage tank bottom on-line inspection was studied.

基于大型常压立式金属储罐底板在线声发射检测及定位的原理，针对声发射检测过程中因声源性质不明确导致的罐底完整性评价结果不准确的问题，采用小波分析方法对罐底声发射信号进行了分解。

Life. But the intrinsic way of the Internet by wire confines accessing and using of the network information.

然而，Internet固有的有线连接方式大大限制了人们对网络信息的访问和使用。

I have a strong persuasion that this is true .

我坚信这是正确的。