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.
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。
In comparison with a concave transducer, the dynamically focused array system provides better resolution and higher sensitivity.
与凹面换能器相比较，动态聚焦阵系统具有较好的分辨率和较高的灵敏度。
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