| 1. | The gas bubbles affect the acoustic properties of the line by energy dissipation as well as by added compliance .
气泡改变了管道的声学性质，这是由于能量的耗散和增加了顺从性的缘故。 |
| 2. | Laboratory measurement of acoustic properties on rock
岩石声波特性的实验室测定 |
| 3. | The present situation and prospect of the acoustic properties research in rock
岩石声学特性研究现状及展望 |
| 4. | Magnetostriction and acoustics properties of tb1 - xdyx fe1 - ymny 1 . 95 alloys and application to sonar transducer
95合金的磁致伸缩和声学性质及在水声换能器中的应用 |
| 5. | Research on the feature extraction based on the acoustic property of target is the main method to the target classification
利用目标声振动信号进行特征提取是目标识别的有效手段。 |
| 6. | With the progressive development of underwater acoustic detection and acoustic - guided weapons , more advanced requirements are imposed upon the acoustic properties of submarines
随着水声探测潜艇的手段和方法以及带有声制导的水下武器的不断完善，对潜艇的声学性能的要求越来越高。 |
| 7. | Prosody . models of speech planning ; evidence from speech errors . modification of features and acoustic properties in fluent speech ; gestural overlap , reduction , enhancement
18韵律学。语言规划模型。语言错误的实证。特征系数的改变和流畅语言中的声学特性。姿态的重叠、简化和加强。 |
| 8. | Traditional feedback exterminating means include improving rooms ’ acoustic property , cascading equalizers or frequency - shifters in the sound amplifying link , etc . nevertheless , these means are inconvenient to operate and cause unnecessary decrease of gain and sound fidelity
传统的声反馈抑制方法,包括改善房间声学环境、在系统中串联均衡器或移频器等。但这些方法操作不便,对音质损伤大,而且传声增益提高甚微。 |
| 9. | Acoustic properties of space inside a railcar are analyzed based fem when frequencies are lower : 1 acoustic modal inside the railcar is calculated whether coupled or uncoupled with shell of railcar , 2 acoustic field inside the railcar is calculated when a force is given
针对某型铁路客车应用有限无法在较低的频率范围内对客车车内的声学特性进行了研究分析，得出了客车车内流体自身的模态和液体与车体耦合后车内流体的模态，并在给定激励下计算了客车车厢内部的声场。 |
| 10. | The beam steering theory is studied to solve the problem that we can not get wider 3db bragg bandwidth and high diffraction efficiency at the same time in the optimum design of ln anisotropic acousto - optic deflector ( aod ) which is a crucial issue in the process to design an ao deflector . based upon the study of the unit cell structure of ln , the acoustic property and the optical property and the acousto - optic property are analyzed and presented
以最根本的铌酸锂晶体晶胞结构为出发点对铌酸锂晶体的声学、光学以及声光性质进行了推导和描述。并以此为基础利用克里斯托夫方程计算铌酸锂晶体中分别在xoz与yoz声光互作用平面上的本征速度与声离轴角之间的关系,并给出倒速度曲线。 |
