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- sound radiation coefficient 声辐射系数
- In this paper, the effect of disc muffler on vibration and sound radiation of worm shell is discussed. 摘要探讨了圆盘型进气消声器对蜗壳振动和声辐射的影响。
- The vibration and sound radiation behaviors of the stem of submarine with rudder and vane are studied. 摘要针对带有舵翼的水下航行器尾部结构模型，研究舵翼对水下航行器尾部的振动及声辐射的影响。
- In order to reduce sound radiation of a structure, the method of Active Structural Acoustic Control (ASAC) was developed in the 1980s. 自八十年代后期以来，为了更为有效地降低结构声辐射，人们提出了主动结构声学控制(ASAC)。
- The singular integration will affect the precision of the result while the Boundary Element Method (BEM) is used in calculating sound radiation. 边界元法应用于计算辐射声场时，由于奇异积分的存在，会影响到计算结果的精度。
- The current study is to investigate the relationship between the sound radiation and enclosure vibration by using a laser vibrometer. 利用激光测振仪，测试了箱体振动速度随频率的变化，分析了前几个振动模态的声辐射能力。
- In this paper,ring-stiffened cylindrical shells coated with internal deck are experimented on vibration and sound radiation. 对具有内部甲板的环肋柱壳模型进行振动和声辐射试验。
- The numerical results explain that the vibration and sound radiation of stern can be degraded by enforcing the rigidity of rudder or reducing the length of the vane. 结果显示舵翼结构与周围流体的相互作用很大，改变其尺寸和刚度会使得模型的声压发生很大的变化，同时流固耦合现象的存在使得模型在水中的频率明显下降，并且模态阶数的顺序也发生了改变。
- A new theory, named the Resonance Radiation Theory (RRT), is presented in order to deeper understalldingthe mechanisms of sound radiation by submerged structure. 为了深入认识水中结构的声辐射机理，木文提出一个称为共振辐射理论（ResonanceRadiationTheory－RRT）的新理论。
- For improved sound radiation capability, the size and the shape of the enhancer can be modified in various ways, including a frustoconical, parabolic, or bell-shaped enhancer. 为了改善声音的辐射能力，特别是在中频和高频范围内的辐射能力，增强器的尺寸和形状可以有多种变化的形式，包括截锥形、抛物面形或者钟形等。
- When the conductance of sound radiation for IDT is equal to the output conductance for the matching network, the reflection loss and transmission loss can be reduced. 叉指换能器的声辐射电导等于匹配网络输出端电导时，可以减小反射损耗和传输损耗。
- Novel radiation coefficient tester for protective fabrics 新型防护织物热辐射系数测试仪
- Numerical analysis of vibration awl sound radiation efficiency from a submerged cylindrical shell has been carried out by using FEM methods, BEM methods and statistical energy methods. 摘要利用有限元、边界元和统计能量分析方法并结合软件对圆柱壳体在流场中受激振动及声辐射效率作了数值计算分析研究。
- Studies showed that proper sound radiation could enhance the activity of protease, activate immobilized protease, promote the immobilizing process, enhance the synthesis productivity of poly peptide, accelerate the acylization catalyzed by protease. 有关研究发现,适宜的超声辐照可以增强蛋白酶的活性;激活固定化蛋白酶,促进酶的固定化过程;提高二肽的酶合成产率;加速在蛋白酶催化下发生的酰化反应。
- Results are presented for the sound radiation efficiency and power of the modes of the rectangular baffled plate subjected to simply-supported boundary conditions when the plate is excited by obliquely incident plane wave. 通过计算，得到了嵌在无限大障板中简支板模型在斜波入射作用下的声辐射功率和辐射效率。
- The results show that the sound radiation at high frequency present obvious character of directivity pattern. There is a higher SPL on the direction of right in front of the leak hole than other direction. 结果表明较高频泄漏声波具有明显的空间指向性特征,在泄漏口正前方声压级(SPL)较高。
- In order to control sound radiation from a baffle in sonar equipment excited by vibration and noise from a ship, the baffle was modeled as a simply supported rectangular thin plate and its radiation characteristics were analytically investigated. 摘要为抑制声呐设备中障板受舰船振动、噪声激励而产生的声辐射，将障板转化成简支薄板模型，分析其在谐波激励下的声辐射。
- Affective Factors on Radiation Coefficient of Waste-heat Boiler Radiant Surface 余热锅炉辐射受热面辐射系数的影响因素
- People are interested in the study of ASAC system based on the radiation modes of radiation structure in recent years, and the system can reduce sound radiation power by controlling radiation modes. 其中以声辐射模态为基础的ASAC系统是近年来的研究热点。 这种方法是通过声辐射模态的抑制来使结构的辐射声功率降低。
- Sound radiation from a submerged elastic cylindrical shell excited by internal harmonic line force is considered. It is useful for understanding the mechanisms of sound radiation from submerged structure and verifying the Resonance Radiation Theory (RRT). 研究了在内壁简谐法向线力激励下的水中弹性圆柱壳的振动和声辐射问题，这有助于深入认识水中结构的声辐射机理，验证水下结构共振声辐射理论。
