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- Transmission equation of acoustic wave in layered media is given.By numerical calculation, the effects of acoustic parameters of each layer on the sound wave reflection and attenuation is analyzed. 摘要本文给出了声波在多层介质中的传播方程,通过数值计算,分析了各层参数对分层吸声结构声学性能的影响规律。
- Cylindrical Wave Reflection and Antireflection at Media Interfaces[J]. 引用该论文 石玉珠;彭奎;沈群;刘宏俊.
- Abstract: This paper presents a terahertz (THz) wave reflection imaging system based on Backward Wave Oscillator (BWO). 中文摘要: 返波振荡器(BWO)作为一种新型高功率连续太赫兹源,具有广泛的应用前景。
- When the CB content is over 6.0 vol%, the wave reflection on the surface of the material increases and so the wave absorbing performance decreases. 材料的吸波性能存在一个极限值;当炭黑含量超过6.;0 vol%25时;入射电磁波在材料表面的反射增强;复合材料的吸波性能会下降。
- The machanism of the effect of MCFs and dissipative media was analysed.Finally, an EM wave reflection decay model was derived from field analysis. 分析和讨论镀金属碳纤维 和电磁损耗介质对复合材料电磁参数和反射性能的影响及作用机理;
- The blast furnace raceway formation under the intensive coal injection by measurement of micro wave reflection gunned through a tuyere is discussed. 通过利用风口测量枪进行的微波反射测量方法讨论了大煤粉喷吹量条件下高炉风口回旋区的形成。
- In order to strengthen maneuverability of fighter aircrafts and decrease rader wave reflection a tailless fighter aircraft has become one of new research directions. 无人驾驶战斗机将是未来战斗机发展的可能方向,为了隐身及其他目的,飞翼布局是一种可供选择的形式。
- Research shows that stress wave reflection method can not only detect the anchoring position and anchoring length, but also indirectly detect the bolt anchoring force through anchor wave velocity. 研究结果表明,应力波反射法不仅可以检测锚杆的锚固位置和锚固长度,而且能由锚固体波速间接检测锚杆的锚固力大小。
- A wealth of practical data show that it is difficult to attain the aim of enhancing the resolution by starting with the increase of frequency for the method of longitudinal (P) wave reflection. 大量实际资料表明,在松散地层中纵波速度受水饱和度的影响,故采用纵波反射法,从提高频率着手难以达到提高分辨率的目的。
- Optical fibre amplifiers - Basic specification - Part 5-3 : test methods for reflectance parameters - Reflectance tolerance using an electrical spectrum analyser. 光纤放大器.;基础规范
- This paper introduces the principle of the test of the bond quality between steel and concrete by ultrasonic wave reflection on Single Surface, and analyzes the feasibility of the test method. 摘要根据超声检测的原理,提出了采用超声多次反射法单面检测钢-混凝土粘结界面质量,分析了该方法的可行性,综合考虑各试验参数的影响。
- Based on the inversion principle of well logging data, the initial shear wave impedance model was established using shear wave reflection coefficient and converted wave interpreted horizon. 基于测井约束反演原理,利用横波反射系数和转换波解释层位建立初始横波波阻抗模型,优选反演处理参数,实现转换波叠后横波波阻抗反演。
- In recent years, in order to reduce the total cost of project by decreasing the wave reflection and the wave forces, many countries have conducted researches on studies of new type of caissons. 为了减小波浪的反射和结构所受波浪力,近几十年来各国竞相研究各种新型防波堤结构。
- According to the real-measured wave reflection coefficient of two kinds of open-caisson wharf structural types in front of dike under the action of wave,the relationship between them is verified. 通过两种开孔沉箱码头的结构形式在波浪作用下实测的堤前波浪反射系数,进一步证实了相互间的关系。
- In the recent years, in order to diminish the wave reflection and the wave force, many countries have conducted researches to study new type of breakwaters instead of the solid conventional structure. 随着港口和海岸防护技术的发展,传统的直立式防波堤已不能满足工程实际的需要,近年来各国竞相研究各种新型的防波堤结构,以减小波浪反射和结构受力,并降低工程造价。
- The cross section is homogeneity.So in theory, it absolutely hard to fit the supposes of all kind that the method of stress wave reflect to examining complete to reinforced concrete plie. 因此理论上讲,它很难满足适用于钢性桩应力波反射波法测试的各种完整性检测方法所具备的系列基本假设。
- Colors are the result of light waves reflected on the retinal of the eyes. 颜色是光波反射到眼睛的视网膜上产生的结果。
- Children's bad behavior is often a reflection on their parents. 小孩的坏品行常常有损父母的名誉。
- On reflection, he agreed to the plan. 经考虑后,他同意了这项计划。
- Bill wave his hand to us and then drive away. 比尔向我们挥手告别后开车走了。