查询词典 acoustic

There are some problems such as no unique solution,large misalignment in stereophonic acoustic echo cancellation caused by high correlation between stereo signals.

针对立体声回波对消中左右两声道的回波具有强相关性而导致自适应滤波器解不唯一、失配大等一系列问题，提出一种新的基于频移变换的去相关非线性预处理方法。

Both strain gauge and acoustic emission techniques are used to observe the mechanical behavior of the laminates with increasing load.

采用电测和声发射技术对层压板的受压力学行为进行观测和分析。

This includes the surface mounted and embedded optical fibre damage detection system, the use of fiber optic strain sensors for monitoring acoustic emission from within composite specimens , and a fiber optic strain rosette for maping the strain tensor within a composite structure.

介绍了光纤传感器在飞行器结构上的应用，包括表面贴装与内埋光纤损伤探测系统，内埋的监测复合材料内部声波辐射的光纤应变传感器及测量复合材料内应变张量的应变计。

Methods: 27 patients with large acoustic neurormas were operated via suboccipital retrosigmoid approach,intraoperative EMG monitoring was used to protect facial nerve,and its function evaluated.

对27例大型听神经瘤（直径＞3cm）均采用枕下乙状窦后入路，手术均在面神经电生理监测下进行，显微外科切除肿瘤，肿瘤切除后对面神经功能进行评价。

The inverse series is non-linear in the scattered field, which includes the source wavelet and a chosen reference medium's properties.;An imaging subseries of the inverse series for a 1-D constant density variable velocity acoustic medium is isolated and analyzed.

逆系列是非线性的散射场，其中包括小波的来源和选择范围中的属性。；的成像亚逆系列一维密度不断变速声中被孤立和分析。

Birds have complex acoustic signals ,their unique vocal organs－syrinx are special species.

鸟类是具有复杂声行为的动物，其拥有特殊的发声器官--鸣管。

My memory of the entertainment is hazy, but I think it involved someone crooning syrupy ballads while accompanying himself on an acoustic guitar.

我对那里演出的印象很模糊了，只记得一个男人在抱着古典吉他低声吟唱。

Yann Tambour has previously made music as the founder and orchestrator of Encre, a project which made use of samples, guitars electric and acoustic as well as other live instruments and his own unmistakable voice.

在21世纪初通过一次个人命名专辑的机会，他的实力在法国音乐风景中显现出来，专辑主题是"墨"计划-一个非凡，独特且不妥协的天地；忧郁但经常情感细腻；样品编辑器；电声乐器；吉他；声学和电的；还有低声细语般演唱的交锋与会面。

A three-dimensional-acoustic Doppler velocimeter is used to measure the velocity near the wall. Measurement of velocity in indirect method is used to determine the tangential stress on the wall. The hair of palm is used to imitate the vegetation.

采用多普勒流速仪测量边壁附近的流速，用间接法中的流速测量法测量边界上的切应力，用棕榈毛作为植物的模拟材料。

The theory of accretion disks are important for many astrophysical phenomena, including Quasars, active galatic nucleic, X-ray binary stars, and young stellar objects. The most important branch of accretion djsk theory is the stability properties of djsks. It is widely considered that the luminosity variations of various astronomical objects are associated with the instability of accretion disk. The viscosity plays an important role in the accretion disk theory, and magnetic field exists commonly in astronomical phenomena. A more realistic analysis of the stabihty of the accretion disk should include both the radjal and azimuthal perturbations because of the strong shear of viscous flow.In this paper, according to the luminosity Variations of Various astronomical objects, we study the radial-azimuthal instability of an isothermal with magnetic field. We find that the radial and azimuthal fields B〓,B〓 are mainly responsible for enhancing the instability of the magneto-acoustic modes and non-axisymmetric modes,and that pulsational oscillations are larger in the radial than in the Z direction. The model may be useful in explaining the periodic light variation of FU orionis and. T Tauri stars.

在许多天体物理现象中，例如活动星系核，X-射线双星和年青的恒星理论中，吸积盘理论起着重要的作用，而吸积盘理论中的一个重要分支是吸积盘的不稳定性理论，普遍认为活动天体的周期，准周期光变现象与吸积盘的不稳定性有关，在吸积盘理论中，粘滞起着重要的作用，而磁场是天体物理中普遍存在的现象，对于几何薄吸积盘不稳定性分析，由于强剪切流的缘故，应该包括径向和环向扰动两个方面，本文结合天体物理中的各种周期，准周期光变现象，研究了含磁场的等温薄吸积盘的径向-环向振荡不稳定性，结果表明：磁场的径向和环向分量对磁声模和非轴对称模的不稳定性的增加起着主要的作用，且径向振荡大于轴向振荡，所得结果有利于解释FU Orionis和T Tauri Stars的周期光变现象。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。