查询词典 acoustic

This thesis attempts to give a detailed phonological study of tones in Xiangtan dialect based on acoustic data.

本文采用实验语音学的方法以及最新的语言学理论优选论对湘潭方言的声调进行了详细的描述和分析。

In this paper,a method for measuring acoustic power of plane piston transducer based on calorimetry is presented.

介绍了一种基于量热法的平面换能器声功率测量的方法。

Projectors and monitoring hydrophones are placed n a chamber along its length. The projectors are driven By the required drives that are calculated aceording to a measured transfer matrix, and amplitude, frequency and incident of the predicted plane wave. Then the acoustic pressure field distribution which is equivalent to the predicted plane wave of any incidence is set up in the chamber. A prototype calilbration system has been developed.

在管中沿管轴方向布置一系列发射换能器和监测水听器，根据实测得到的传递函数矩阵和所要模拟的平而波频率、幅度和入射角计算得到一组发射换能器驱动信号的幅度和相位，然后以此信号激励每个发射换能器，就能在管中形成一个等同于任意角度入射的自由场平面波声场的声压分布。

The relation between the ultrasonic frequency f and the wavelength λ0 was deduced. The relations between the diffraction angle θd,the acoustic polar angle θa and the incident angle θi were calculated.

推导出超声波频率f和光波波长λ0的调谐关系；计算出滤波器的光谱分辨率R和集光能力δθi；光入射角θi与衍射角θd、声入射角θa之间的关系。

A very sonorous bell, placed beside the portress, and which was audible throughout the house, indicated by its varied peals, which formed a sort of acoustic telegraph, all the actions of material life which were to be performed, and summoned to the parlor, in case of need, such or such an inhabitant of the house.

在担任传达的嬷嬷旁边，挂着一口声音非常洪亮全院都能听到的铜钟，通过各种不同的敲法，好象是种有声电报似的，来表达在物质生活中所应进行的全部活动，并且，在必要时，还可把修院里的这个或那个人找到会客室里去。

The acoustic phonon deformation potential scattering is also important at lower temperatures.

温度较低时，声学波压电散射对电子迁移率的影响较大。

In the contemporary acoustic equipment, usually uses the potentiometer to carry on the volume control.

在当代的音响设备中，通常采用电位器进行音量调节。

In this case, different gases ensure different acoustic responses with values of approximately 50 ppm.

这种情形下，不同的气体肯定有不同的声学反应，反应值大约在百万分之五十。

Based on the fundamentals presented in the part Ⅰ, this part of the paper,focused on the experimen tal analysis in contrast with the acoustic characteristics of boilover premonitory noise and the typical fire field environment noise, and a set of speci...

本文则在第一部分的理论基础之上，重点分析了扬沸前兆噪声和典型火灾现场环境噪声的声学特性，从其中寻找出能有效地进行扬沸火灾监测预报的一些特征物理量。

Researching different hardware and different adaptive algorithm is a primal methodology to solve the problem of acoustic echo canceling.

为了提高回波消除的质量，探索不同的硬件实现方法和不同的自适应算法是解决这一问题的主要途径。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。