本文利用兆赫兹频率级别的聚焦超声换能器诱发冲击波作用于结石模型材料，采用不同的声波参数包括频率、强度、占空比等进行了实验。
We used a Mega Hz focused transducer to focus on the surface of the calculus model and tried different frequency, intensity, time and duty cycle.
与其他聚焦方式相比，多元组合聚焦超声换能器具有较大的聚焦深度、较理想的焦域以及较高的声强度等优点，并且聚焦区域和声强度易于控制。
Comparing with other kinds of focusing methods, it has a lot of merits: a deeper focal length, a greater ultrasound intensity and an ideal focal region and all of them are easily controlled.
以凹球面超声换能器为研究对象，假设聚焦区存在一刚性球形微粒，对此时的散射场进行分析。
On the assumption that there was a small solid sphere in the focusing area, the scattering field of concave sphere ultrasonic transducer was analyzed.
研究了超声换能器阵列驱动信号的相位调控精度对阵列聚焦声场的影响。
The effect of phased accuracy of the driving signals for array transducers on focused ultrasound field was studied.
概述了各种超声医学成像换能器现状，以及换能器聚焦和数字波束成像技术。
This article introduces many kinds of ultrasonic transducers, transducer focus, and digital beam forming technology.
本文是研制超声相控阵换能器动态聚焦系统，它包括数字式多通道信号发射系统和两种超声相控阵换能器。
This paper focuses on developing a digital ultrasonic phased array transducer system which can realize the focusing and scanning of sound beams.
本文应用高强度聚焦超声技术，设计了治疗泌尿系统疾病的线阵换能器。
A linear array transducer for HIFU to treat the urinary system disease is described in this paper.
激光测温换能器的应用使聚焦超声治疗肿瘤的有效性和安全性更加提高，并且高效、简便、实用、经济。
The utility model improves the effectiveness and safety of the focused ultrasonic treatment of tumor, and has the advantage of efficient, simple, practical and economical use.
激光测温换能器的应用使聚焦超声治疗肿瘤的有效性和安全性更加提高，并且高效、简便、实用、经济。
The utility model improves the effectiveness and safety of the focused ultrasonic treatment of tumor, and has the advantage of efficient, simple, practical and economical use.
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