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- ultrasonic echo sounding 超声测深法
- ultrasonic echo sounder 超声波回声测深仪,超声回波测深仪,超声回声测深器,超声测深装置
- A device used underwater to produce pulses of sound, as for an echo sounder. 声脉冲发送器置于水下产生声脉冲的装置,如回音器中的装置
- Echo sounding devices were early used in making maps of the ocean floor. 讲的是回声定位仪器最早用于绘制海底地图。很容易找到对应的答案。
- 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。
- Love falls in love with love, comes like an echo sounding back, searches its mirrored shadow within a look. 爱与爱彼此相恋,犹如回声在激荡,寻找镜中的影像,在短暂的一瞥中。
- 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。
- In order to inspect the pipeline position and quantitate the pipeline settling depth, the single-beam echo sounding technique is used in submarine pipeline inspection. 摘要为查明海底管道的位置和掩埋状态,在海底管道检测中使用了单波束测深技术。
- The wall can optimally absorb the echoing sound. 这墙能极有效地吸收回声。
- In an ideal situation, the transmitting wave would experience reflections and attenuation between layers.This would directly effete the radar echo sounding. 较为理想的情况现下:入射波在进入深层反射面之前要经过多层介质面的反射,及各层介质中衰减,这直接影响入射信号能否到达深层反射面而产生回波。
- The precise positioning, satellite altometering, Multi-beam echo sounding, synchronization of different elements, offsets correction and modeling of charted sounding etc. 这种强烈的反差和不和谐催生了海道测量理论和技术方法的变革。
- 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。
- A device used underwater to produce pulses of sound,as for an echo sounder. 声脉冲发送器置于水下产生声脉冲的装置,如回音器中的装置。
- Inspection installation and water tight transducer of echo sounder on berth. 测深仪的换能器船台安装和水密性检查。
- 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。
- Ultrasonic Echo Ranging Equipment 超声回波测距设备
- Inspection installation and water tightness transducer of echo sounder on berth. 测深仪换能器船台安装和水密性检查。
- The familiar and echoing sound of pianos from Gulangyu is his nostalgia. 那回荡着的熟悉的鼓浪屿钢琴声就是他的乡愁。