1.
Model validation on echo characteristic modeling of underwater target
水中目标回声特性建模中的模型验证研究
2.
like or characteristic of an echo.
像回声一样，有回声的特征。
3.
Methods:92 cases of diffuse hepatocellular carcinoma's ultrasonography manifestations and clinical features were studied.
方法：对92例弥漫型肝癌的超声图像特征、床特点进行回顾性研究。
4.
Methods A retrospective analysis of the ultrasonographic characteristics was made of38 patients with subacute thyroiditis.
方法:回顾性分析了38例亚急性甲状腺炎患者的声像图表现特征。
5.
Results The ultrasonographic changes of subacute thyroiditis were characterized by thyroid enlargement and diffused or limited low echoes.
结果:亚急性甲状腺炎的声像图特征主要表现为甲状腺肿大及弥漫性或局限性低回声。
6.
Characters of Echolocation Calls in Myotis macrodactylus
大趾鼠耳蝠回声定位声波特征与分析
7.
The Study of Ultrasonic Echoes Simulation and the Characteristic Parameter Estimation Based on the Nonlinear Model;
基于非线性模型的超声回波模拟及其特征参数估计的研究
8.
Research on Diet, Echolocation Calls and Emergence Time of Taphozous Melanopogon (Emballonuridae);
黑髯墓蝠的食性、回声定位信号特征及其出飞时间的研究
9.
It is often misjudged the flaw echo in ultrasonic examination that the echo signals produced by sound field property and geometrical shape of the component examined according to sound field theory.
超声探伤中,由于声场特性、件几何形状的影响,所产生的各种回波信号常常被误判为缺陷信号。
10.
Research on the Acoustic Characteristics and Acoustic Considerations of Noise-barrier;
道路声屏障声学特性与声学设计研究
11.
The wing shape and echolocation calls of Ricketti's big-footed bat(Myotis ricketti)
大足鼠耳蝠的翼型和回声定位声波特征
12.
Characteristics and Analysis of Echolocation Calls by Eptesicus serotinus andersoni
大棕蝠江南亚种回声定位声波特征与分析
13.
Feature extraction of ultrasonic echo signals(RF);
超声回波射频(RF)信号的特征值提取
14.
Acoustic propagation property and application of Hartmann acoustic generator
哈特曼声波发声器声学传播特性及应用研究
15.
2) Mised and inhcmoge-neous internal echo of the solid mass.
(2)内部回声为混合性或实质不均质性;
16.
Echo Waves and Their Stability in Linearly Coupled Oscillators
线性耦合振子中的回声波及其稳定性
17.
positional response of carbon microphone
碳粒传声器倾斜角特性
18.
directional frequency characteristic of microphone
传声器指向性频率特