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- acoustic radiation measurement 声辐射测量
- It is important in ASAC system based on acoustic radiation modes to obtain adjoint coefficient of the radiation modes. 基于声辐射模态理论进行ASAC控制系统中的一个重要内容就是获得声辐射模态伴随系数。
- It is important in ASAC based on acoustic radiation modes to obtain adjoint coefficients of the radiation modes. 声辐射模态伴随系数的获取是基于声辐射模态理论进行 ASAC控制中的重要环节。
- A mathematical model about acoustic radiation from structure submerged in unbounded sound field was developed using boundary element method. 摘要建立了无界声场中结构体声辐射的边界元数学模型。
- The examples actualize analysis of bilateral coupled vibration and acoustic radiation by using transitivity of CAE software results. 还利用CAE软件结果的可移植性,考虑了半封闭加筋圆柱结构内外分布不同介质时,实现了双边耦合振动声辐射分析求解。
- Boundary element methods are used to calculate acoustic radiation of the piping system, which provides the theoretical direction for decr... 计算分析结果表明,本文所建立的振动和声辐射模型及算法有效,有助于该类问题的解决。
- As the radiation instrument provider, it can provide the imported radiation measurement and radiation protection instruments for you. 作为仪器仪表供应商,为您提供进口的辐射测量和辐射防护用仪器仪表。
- Based on the acoustic radiation mode analysis, the transfer matrix relating the pressure at every field point to normal component of surface velocity is formed. 摘要基于声辐射模态分析,建立了外部场压和结构表面振动速度之间关系的传递矩阵。
- Vibration transmission and underwater acoustic radiation characteristics experiment of floating raft system has an important technical application prospect. 对浮筏系统的振动传递及水下声辐射特性进行试验研究有其重要的工程应用前景。
- Anechoic chamber is the primary test site of electromagnetic radiation measurement, also the important facility for antenna and wave propagation research. 电波暗室是辐射电磁场的主要测量场地,也是研究天线与电波传播特性的重要试验设施。
- In this system , the nuclear radiation measurement and the microelec-tric technique have been used to carry out ore discharge capacity in the space.Some experiments aredone. 通过核技术与电子技术相结合的测量系统(相仿核皮带秤)来解决大流量空中放矿计量,并对此进行可行性试验研究。
- The transducers in acoustic logging tool are usually cylindrical piezoelectrical transducers and their acoustic radiation and acceptance have preferred directivity. 换能器的声辐射与接收指向性由其形状与尺寸确定。
- A coupled FEM/BEM for solving fluid-structure interaction problem in structure-borne noise propagation and underwater acoustic radiation is present in this paper. 摘要本文以偶合的有限元素/边界元素法,来处理结构噪音传播与水中噪音辐射中弹性结构物与流体之互制问题。
- In tokamak plasma radiation diagnostics,an emissivity profile derived from line integrated radiation measurement data with Abel inversion or tomographic analysis is averaged over a poloidal cross section of the plasma chord. 在托卡马克等离子体辐射诊断中,通过阿贝尔反演或层析分析从线积分辐射率中得到的空间分布,是辐射率在束线宽度范围内的平均值的分布。
- Cryogenic radiometer has the lowest uncertainty in optical radiation measurement, and the measurement uncertainty mainly based on optical adjustment and the control of experimental environment. 低温辐射计是目前光辐射测量不确定度最低的仪器。测量不确定度主要依赖于光路的调整和实验环境条件的控制。
- Based on the modal analysis and harmonic respondence analysis of piping system, the acoustic radiation efficiency is calculated;therefore it illustrates the connection between the vibration and noise. 摘要基于管道振动的模态分析及谐响应分析,计算管道的声辐射效率,建立结构体振动与其辐射噪声之间的关系。
- It reviews the developing process of researching acoustic radiation of underwater elastic structures excited by mechanical forces chiefly, and puts forward the trends of the acoustoelasticity briefly. 本文系统综述声弹性研究的基本内容和方法以及重要结果,重点回顾水下弹性结构受机械力激励的外场声辐射研究的发展过程,并简单归纳声弹性研究的发展趋势。
- And draw in the low-frequency range, the impact of internal air over the external shell’s acoustic radiation characteristic is very small.The effect of the internal air can be neglected. 3. 得出在低频范围内,内部空气对壳体外部声场声辐射特性的影响很小,可忽略内部空气的影响。
- The method of multiwavelength optical radiation measurements for shock temperatures is described. 文中介绍了冲击温度的多波长光谱辐射测量方法。