| 1. | Investigation on the acoustic field matching of thermoacoustic - engine
热声热机系统声场研究 |
| 2. | Study on acoustic field by a bi - frequency ultrasonic focused transducer
复频聚焦超声换能器声场研究 |
| 3. | Thus , the study of the acoustic field of the layer and fractures in and outside of a borehole is the theoretical base for sonic logs
而研究具有分层和裂缝地层井内外声场的问题是声波测井的理论基础。 |
| 4. | Firstly , the ray method and normal mode method are used to calculate the acoustic field in underwater with the source in the air
首先，用射线方法和简正波方法对空气中的声源在水下产生的声场进行了分析。 |
| 5. | In part two , the acoustic field in and outside of a borehole is analyzed theoretically and numerically for the different physical model of the borehole
第二部分主要针对不同的井眼物理模型，对其井内外声场进行了数值模拟和理论分析。 |
| 6. | This paper focuses on the theoretical analysis and numerical modeling of acoustic field in and outside of the borehole . this paper can be grouped into two parts
本论文致力于具有分层和裂缝地层井内外声场的理论分析与数值模拟，主要分为两部分。 |
| 7. | Finally , in the application of the resistance matrix , the calculation of the acoustic field has been avoided , giving a degree of accuracy comparable to the classical approaches
利用阻力矩阵法，不仅避免了声场的计算，而且能达到经典法所能达到的精度。 |
| 8. | This model proves to be successful in predicting resonant modes of acoustic field and explaining the axially symmetric deviation of the levitated samples near the reflector and emitter
它可以成功地预测声场的谐振模式，并解释了靠近反射端和发射端的样品偏离对称轴的实验现象。 |
| 9. | Modeling the acoustic field with proper sound propagation model is necessary for the research on sound propagation in the sea and is the basis of ocean acoustic tomography
研究海洋中的声传播需要选择适当的传播模型对海洋环境进行建模，精确的传播模型也是海洋声层析研究的基础。 |
| 10. | When the acoustic impedance contrast between the thin dipping interface and its adjacent formations exits , their interfaces can be observed from the snapshots , but the acoustic field is rather complex
4 、当倾斜薄夹层的声阻抗与其邻层的声阻抗相差较大时，尽管从波场图中可以大致看出两个地层界面的存在，但此时声场分布非常复杂。 |
