查询词典 acoustic

The Contents include anatomical pathways of the acoustic reflex, various pathological reflex types and related audiometric test .

内容包括：声反射的解剖路径、各种病理情况下声反射的类型及与其他听力学检查结果之间的关系等。

Objective To calculate the least acoustic response value of children aged 0-6 years in a quiet room, and to explore the positive standards of hearing screening at different ages in some nonstandard audiometric room.

目的计算0-6岁儿童在相对安静房间(本底噪声≤45dB A)测听的最小听觉反应值，探讨在非标准测听室进行儿童听力筛查不同年龄组的筛查阳性标准。

Methods 26 patients with auditory neuropathy were assessed by MASSR; these patients were all diagnosed by behavioral audiometric testing, acoustic impendance, speech perception, ABR and DPOAE.

对26例经纯音测听、声导抗、言语测听、听性脑干反应和畸变产物耳声发射确诊为听神经病的患者，行多频听觉稳态反应检查，并与纯音听阈进行比较。

Therefore, it can be applied into the fields of auditoria acoustic design, noise control, virtual reality, and so on.

该技术为建筑音质设计、噪声控制和虚拟现实等领域开辟了新的研究方向，具有很高的理论价值和实用价值。

Secondly, 4 methods of azimuth estimation based on vector hydrophone according to forms of nosie and signal are brought forward. The principles of these 4methods are set forth, simulating them by computer. Acoustic intensity averager can effectively suppress isotropic non-coherent interference; DOA based on line-spectra can effectively detect the target radiating line-spectra and estimate its azimuth angle; Bar graph approach can suppress line-spectra coherent interference and distinguish different targets radiating line-spectrum. Weighted bargraph approach can detect target in broadband coherent interference and estimate its azimuth angle.

其次，根据背景干扰和信号样式的不同，提出了单矢量水听器方位估计的4种方法；阐述了这4种方法的原理，并进行了计算机仿真，指出平均声强器方位估计适用于各向同性噪声场背景干扰，讨论了平均声强器的处理增益；目标辐射噪声中有线谱时，线谱方位估计有很好的性能，其中的LOFAR线谱和高频解调得到的DEMON线谱都是目标的特征谱线，可以利用它们进行方位估计，详细讨论了利用特征线谱单个矢量水听器分辨多目标的性能；直方图方位估计能抗强线谱相干干扰；加权直方图方位估计可以抗宽带相干干扰。

High-Resolution Bathymetric SideScan Sonar is a kind of acoustic equipment which can be applied on the high-resolution seabed terrain and physiognomy surveying.

中文摘要高分辨率测深侧扫声纳是一种能够探测高分辨率海底地形和地貌的声学设备。

From acoustic wave equation, current continuity equation and boundary conditions, we have solved the interface potential produced by BAWs in interface between piezoelectric solid and semiconductor. The results of YZ LiNb03/n-Si structure with SV wave incidence have been calculated and experimental result has been given. Finally, we have presented some kinds of BAW acoustoelectric convolver structures and analyzed their features.

由声波动方程，边界条件和半导体的电流连续性方程出发，推导出了斜入射体波在压电体/半导体界面产生的界面电势以及通过半导体的作用产生的倍频电势的结果，并且对YZ-LiNb03/n-Si结构，SV波入射的情况进行了计算，给出了部分实验结果，提出了几种可能的体波声电卷积器的结构，并分析了它们各自的特点，理论和实验的结果将为今后这类器件的研制提供依据。

The liquid density sensors presented in this project are dependent on the Surface Acoustic Wave technics in the fabrication process. Considering the maturity of SAW technics and the easiness of high frequency BAW generation with the IDTs, it is convenient for sensors miniaturization.

本项研究工作提出的微量液体密度传感器在制作上仅需采用成熟的声表面波工艺即可，实现起来比较容易，叉指换能器容易激发较高频率的体声波，便于传感器小型化。

The growth kinetics and the stability of synergistic films of benzotriazole and halide ion were investigated by bulk acoustic wave method.

采用体声波传感技术就卤素离子与铜缓蚀剂——苯骈三氮唑协同成膜的动力学及相应复合膜的稳定性进行了研究。

Dynamic gray scale sonography reealed a 3.7 x 3.8 x 3.5-cm round, well-defined, slightly hypoechoic, mildly heterogeneous mass with posterior acoustic enhancement immediately adjacent to the medial aspect of the brachialis muscle and just anterior to the medial epicondyle.

动态灰阶超声检查显示一3.7×3.8×3.5cm的圆形肿块，边界清晰，呈略低回声，轻微不均质，而且后方回声增强，肿块紧邻肱肌内侧，并位于内上髁的前面。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。