查询词典 acoustic

In this paper cylinder acoustic holography based on spatial transform of sound field is introduced into noise sources identification and localization for cylinderlike sound sources.

主要介绍了基于空间声场变换的柱面声全息技术，及其在识别和定位柱状或类柱状声源方面的应用。

Shortly after the Dadaist movement, electronic and acoustic media began to merge.

在达达主义之后的一个短时期，电声及声学媒体开始融合。

Results 12 cases as abdominal hernia (of which indirect hernia 9 cases, direct hernia 2 cases, femorocele 1 case), ultrasonography shows middle-high echo or linkage heterogeniety echo clumps; 8 cases as hydrocele, Ultrasonogram shows anechoic; 2 cases as cryptorchidism, ultrasonography shows normal testicular middle-echo; 4 cases as lymph node mass (of which lymphoma 2 cases, lymph node metastasis 1 case, lymph node inflammatory change 1 case), acoustic image shows low weak echo; 4 cases as substance mass (of which fibroma 1 case, spermatic cord tumor 1 case, Desmoid tumor 1 case, spermatic cord inflammation 1 case), Ultrasonography shows non-uniformity middle-highor low echo.

结果 12例为腹外疝（其中斜疝9例、直疝2例、股疝1例），声像图表现为中高回声或混杂性回声团块；8例为鞘膜积液，声像图表现为无回声；2例为隐睾，声像图表现为似正常睾丸样中等回声；4例为淋巴结包块（其中淋巴瘤2例、淋巴结转移1例、淋巴结炎性改变1例），声像图表现为低弱回声；4例为实质性包块（其中纤维瘤1例、精索肿瘤1例、韧带样瘤1例、精索炎症1例），声像图表现为非均匀性中高回声或低回声。

The methods concerned include X-ray diffraction ,thermal analysis,dilatometry,acoustic emission and electrical resistance,of which the last one is widely used in that,in addition to the fact that the testing process can hardly affect the samples,it has high precision,simple electro-circuits,and high speed as well.

讨论了形状记忆合金相变温度的常用测量方法的现状、优缺点及发展趋势，包括变温X 射线法、热分析法、膨胀法、声发射法及电阻法。其中电阻法精度高，电路简单，测量过程对试样的影响小，速度快，被广泛采用

ResultsOne example was misdiagnosed,and the ultrasound diagnosis coincidence rate was 94.1%.The basic acoustic image characteristics of retroperitoneal abscess was:fluid or mixing masseslocated in the retroperitoneal space,with the shapes of round,ellipse or fusiform,echoless or mix echo in it,and light-spot,laminated echo and facula was seen.

结果：本组误诊1例，超声诊断符合率为94.1%，腹膜后脓肿基本声像图特征为：位于腹膜后间隙的液性或混合性包块，呈圆形、椭圆形或梭形，内为无回声或混合回声，并见光点、片状回声及光斑。

Results One example was misdiagnosed, and the ultrasound diagnosis coincidence rate was 94.1%. The basic acoustic image characteristics of retroperitoneal abscess was: fluid or mixing masseslocated in the retroperitoneal space, with the shapes of round, ellipse or fusi-form, echoless or mix echo in it, and light-spot, laminated echo and facula was seen.

结果：本组误诊1例，超声诊断符合率为94.1%，腹膜后脓肿基本声像图特征为：位于腹膜后间隙的液性或混合性包块，呈圆形、椭圆形或梭形，内为无回声或混合回声，并见光点、片状回声及光斑。

Another major product line development and marketing touch-screen, professional inquiries, software development and touch inquiries machine, while sales have GTT, ETWO, ONETOUCH brands such as surface acoustic wave screen, as well as ELO, EELY screen such as resistors.

另一条产品线主要开发和销售触摸屏、专业查询软件开发和触摸查询一体机，同时代理销售有GTT、ETWO、ONETOUCH等品牌表面声波屏以及ELO、EELY等电阻屏。

According to the neural cable model, this dissertation deduced a stable solution. Based on the lead model, the vibratory equation of electriferous lead in a static magnetic field is set up under the condition of coupling magneto-acoustic field. It is verified that the vibration in bio-tissue is proportional to with the product of the magnitude of the magnetic field, the current amplitude and the sinusoid of angle between them.

根据神经的电缆模型，论文导出直流稳态解；基于导线模型，根据洛仑兹方程和细弦上的波动方程，论文建立了磁声耦合条件下带电导线在磁场中的振动方程，导出生物组织中的振动与磁场的大小、电流的大小和磁场与电流角度的正弦值乘积成正比。

Laser light travelling in a medium such as an optical fiber, the variations in the electric field of the beam itself may produce acoustic vibrations in the medium via electrostriction.

他们用两个2ns的&数据&脉冲前后耦合入玻璃光纤的一端，来模拟两个几乎同时到达的信息包，同时将一1.5ns的&写&光脉冲耦合入另一端。

The thesis mainly consists of:In chapter 1, on the ground of demanding background of the task, illuminate the urgent and important of the system on the manufacture and the embattle form of the buoy and methods about the experiments during synthesis experimentations that seeing about ocean underwater acoustic environment.

全文从以下几个方面进行了论述：在第一章里，从项目需求背景出发，说明研制本系统的紧迫性和重要性，概述了在海洋水声环境综合考察试验中，浮标的布阵形式及实验方法。

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。