Methods Liver scanning was performed with a high frequency transducer to measure the velocity acceleration time and resistant index of portal vein and hepatic artery after finishing the anastomosis.
方法选用高频手术专用探头，于手术中门静脉、肝动脉吻合完成后立即测量肝动脉及门静脉血流速度，并计算快速充盈时间及阻力指数。
They work by sending out pulses of high-frequency sound and then interpreting the reflections as images.To do all this, though, you need a device called a transducer.
它们的工作原理是通过发出高频声波脉冲并将反馈的信息转变成图像，为了实现这一过程，你还需要一个叫做变频器的设备。
They work by sending out pulses of high-frequency sound and then interpreting the reflections as images. To do all this, though, you need a device called a transducer.
它们的工作原理是通过发出高频声波脉冲并将反馈的信息转变成图像，为了实现这一过程，你还需要一个叫做变频器的设备。
QS28 is equipped with two 18-inch low frequency transducer precision. Obtain high sensitivity and fast transient peak of the abnormal response is given.
QS 28装备了2只18英寸精密低频换能器。可获得高灵敏度以及对快速的瞬间峰值给出异常响应。
The technology of matching layer transducer is an efficient method in middle-high frequency among many methods of broaden the frequency of transducers.
在众多拓宽换能器频带的方法中，匹配层宽带换能器技术在中高频段是一种较为行之有效的方法。
The 6kv transducer with the series-wound unit of the PWM pressure type can realize the output of the direct high pressure by collecting a lot of lower frequency conversion pressure.
单元串联多电平pwm电压源型6k V变频器采用若干个低压PW M变频功率单元串联的方式实现直接高压输出。
Ultrasound Biomicroscopy(UBM)is a new ultrasonic equipment with high-frequency transducer by which structures in the anterior part of eyes can be real-time observed and measured exactly.
超声生物显微镜（UBM）是一种专供眼前段检查的新型超声设备，具有简便、实时、无创等特点，不仅可清楚显示眼前段形态结构，并且可进行定量检测。
This method does not require external wiring, a simple, high-precision frequency setting, a digital frequency settings for a single frequency transducer settings.
该方法不需要外部接线，方法简单，频率设置精度高，属数字量频率设置，适用于单台变频器的频率设置。
This method does not require external wiring, a simple, high-precision frequency setting, a digital frequency settings for a single frequency transducer settings.
该方法不需要外部接线，方法简单，频率设置精度高，属数字量频率设置，适用于单台变频器的频率设置。
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