Objective To detect the carotid elasticity quantitatively in end-stage renal disease(ESRD) patients using echo-tracking(ET)technique.
目的探讨回声跟踪（ET）技术对终末期肾病（ESRD）患者颈动脉弹性的检测及其意义。
The subjects were not only able to tell which objects matched which echo pattern, but the brain tracking revealed the visual cortex activity when the subjects heard the echoed clicks.
这些受试者不仅可以清楚地分辨哪一种物体对应哪一种回声，而且大脑活动跟踪发现当他们听见这些回声时，大脑的视觉皮质会有活动。
Conclusions Echo-tracking technique is a feasible and reliable method for assessing carotid elasticity in children.
结论血管回声跟踪技术是定量评价儿童颈动脉血管壁弹性功能的准确无创方法。
As the basis of the tracking algorithm, an echo model is the key to radar altimeter design.
雷达高度计回波模型是设计、检验高度计跟踪算法的基础，是高度计设计的关键性环节。
It is proved both in theory and from practice that the LFR times can meet the performance specifications of laser echo rate while guaranteeing the tracking precision.
理论分析和工程实际表明，在保证跟踪精度的情况下，该激光重频值将满足回波率的技术指标要求。
The scheme accomplishes range tracking by adopting three range gate tracking to make middle gate always centered at echo pulse center through feedback circuit and deviation calculation circuit.
该方案采用三波门跟踪，通过偏差计算电路和反馈控制电路使中间波门中心始终对准目标回波脉冲中心，完成距离跟踪。
This method utilizes the multiple receiver of monopulse tracking radar, and adopts the time-space processing method to process the echo.
该方法利用单脉冲雷达空间双路接收的特点，采用时-空二维联合处理的方法对回波信号进行处理。
This method utilizes the multiple receiver of monopulse tracking radar, and adopts the time-space processing method to process the echo.
该方法利用单脉冲雷达空间双路接收的特点，采用时-空二维联合处理的方法对回波信号进行处理。
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