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- ultrasonic echo gram 超声波回声图
- The simulated annealing method is applied to the simulation of ultrasonic echo in this paper. 摘要本文应用模拟退火算法来改进超声回波模拟问题。
- By interaction between ultrasonic waves and elastic medium, it has carried much information of material, which are received in the form of ultrasonic echo signals. 它是利用超声换能器的振动产生的超声波与弹性介质相互作用,从而携带大量有关材料性能的信息,这种信息以超声回波信号的形式被接收到。
- Methods 17 patients were examined by trans thoracic echocardiography(TTE),and observed the membrane shape ultrasonic echo、blood stream change in aortic canal. 方法采用经胸超声(TTE)检查17例夹层动脉瘤患者,观察主动脉管腔内有无膜样回声及管腔内血流情况。
- As the sample of eraser, ultrasonic echo signal is collected to further prove the relationship between the echo displacements and the changing of temperature in the experiment. 实验中利用橡皮作为样品,采集超声回波信号,进一步验证了回波信号与温度变化之间的关系。
- It is proved by simulation and experiment that we can obtain the TDE value precisely by this method and simultaneously the effect on TDE because of the ultrasonic echo specialty is avoided. 仿真与实验研究表明，该方法在高信噪比下可以精确得到时延估计值，同时避免了超声回波信号的慢衰减高频振荡特性对时延估计带来的影响。
- Ultrasonic Echo Ranging Equipment 超声回波测距设备
- A bispectrum-based approach is applied to extract feature information of cementing oil well from ultrasonic echoes. 给出了基于双谱提取固井胶结特征信息的方法,并利用这种方法对实际信号进行了处理。
- Statistic evaluation of ultrasonic echo feature value 超声回波特征值的统计学分析方法
- Her performance was cheered to the echo. 她的表演获得长时间的喝采。
- The doctors gave him an ultrasonic brain scan. 医生给他做了脑部超声波扫描检查。
- The bird-song is the echo of the morning light back from the earth. 鸟的歌声是曙光从大地反响过去的回声。
- His words aroused no echo in their hearts. 他的话未能在他们心中引起共鸣。
- echo gram 超声波回声图
- A balance designed to weigh very small loads, up to 0.1 gram. 微量天平用来称量极其小量重量的天平，精确到0.;1克
- STUDY OF IMPROVED RESOLUTION AND DECONVOLUTION OF DEEP ULTRASONIC ECHO SIGNAL IN TISSUE 软组织深层超声回波信号解卷处理和提高分辨率的研究
- A dust particle weighs only a thousandth of a gram. 一粒尘埃的重量仅有千分之一克。
- It prevents the other end from hearing an echo of themselves. 该功能可以防止远端听到他们的回声。
- The daily echo have a readership of over ten millions. 《每日回声报》拥有读者逾一千万人。
- Currently, nanotubes cost $100 per gram. 现在，每克纳管的价格是100美元。
