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- Specifically, snow tends to absorb higher frequency acoustical waves. 很特别的是,雪花趋向吸收更高频率的声波。
- Based on the viscosity acoustic absorption theory, Rock material is natural low-pass filter of acoustical wave. 摘要声波在岩石材料中传播时会发生差异衰减现象。
- The acoustical wave equation is presented a serial spatial and time iterative equations and room acoustics field is simulated using finite difference time domain method. 时域有限差分法将声波基本方程表示为一个时间和空间的迭代方程组,实现对室内声场中低频段的模拟计算。
- A pulse acoustic wave and its relationship with OAO flurescence are recorded. 记录了CO_2脉冲激光激发BCl_3分子时形成的脉冲声波,及其与OAO荧光的对应关系。
- J.F. Rosenbaum, “Bulk Acoustic Wave Theory and Devices,” Artech House, 1988. 钟曜光,“压电式微超音波感测器,”国立台湾大学机械工程研究所,民国90年。
- Influence of Acoustic Wave Attenuation on the Properties of Fiber AOTF[J]. 引用该论文 厉群;刘小明;李佟;金韬;周炳琨.
- For very high frequency clocks, a surface acoustic wave (SAW) oscillator is preferable. 对于非常高的频率时钟,用声表面波振荡器更好。
- All these indicate that the acoustic wave velocity in granite samples is affected by several extrinsic factors and some rules may be found. 实验结果表明,声波在岩石内传播速度受很多外在因素影响,并具有一定的传播规律。
- Acoustical activity of isomorphous crystals Bi12GeO20 and Bi12SiO20 has been studied by measuring the splitting of degeneracy of transverse acoustical waves propagating along high symmetric direction with inelastic neutron scattering. 通过用中子非弹性散射测量旋声晶体高对称方向的横声学支声子色散曲线的劈裂,从三个方面研究了同构异质晶体Bi_(12)GeO_(20)和Bi_(12)SiO_(20)的旋声特性。
- Express the factors resulting in the attenuation of acoustic waves. 叙述引起音波衰减的因素。
- By comparing the acoustic wave impedance with the VSP (vertical seismic profile), the reflectors of the CCSD pilot hole have been analyzed. 分析结果表明(1)岩性间波阻抗差异产生反射波,如榴辉岩与副片麻岩之间波阻抗差异;
- The transduction of acoustic waves into voltages by a microphone. 声波被麦克风转换为电压。
- The FEM equation of acoustic wave is used to calculate the air-current natural frequency and pressure pulsation in the pipeline. 利用有限元法求解声学波动方程,建立了管内气流的有限元运动方程,计算出管内气柱的固有频率和气流压力脉动。
- The acoustic wave impedance coefficient is recovered from the incomplete data of the far field pattern. 对于系数反问题进行了研究,利用远场模式的不完全数据反演声波阻尼系数。
- Ken-ya Hashimoto, Surface Acoustic Wave Devices in Telecommunications: modeling and simulation, Springer, 2000. 陈建宏,通讯用压电陶瓷材料及元件,工业材料115期,1996。
- Array acoustic wave data are widely applied in well logging evaluation due to its abundant stratigraphic information. 摘要阵列声波资料由于能提供丰富的地层信息,在测井评价中被广泛应用。
- The results show that acoustic wave in pipeline propagates as plane wave with little falloff. 研究结果表明,声波通过管道中介质以平面波传播且衰减较小;
- D.S.Ballantine,R M.White,S.J.Matin,A.J.Kicoo,Acoustic wave sensors,San Diego:academic 1997. 王文.;声表面波气体传感器关键技术研究
- Bill wave his hand to us and then drive away. 比尔向我们挥手告别后开车走了。