The estimated velocity increased with the decrease of Angle between the ultrasonic beam and blood flow.

随着超声波束与血流角度的减小，检测到速度增加。

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Ultrasonic flow meter fluid flow through the detection of ultrasonic beam (or ultrasonic pulse) effect to measure the flow meter.

超声流量计是通过检测流体流动对超声束（或超声脉冲）的作用以测量流量的仪表。

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When material grain size is on the order of( ) wavelength of larger, excessive scattering of the ultrasonic beam may affect test result.

材料晶粒尺寸约大于多少波长时，超声波的散射会影响试验结果？

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They would thus stick like limpet mines to clots, before being burst by an ultrasonic beam to wash the clots away.

ECONOMIST: The ne plus ultra of medicine | The

Schering, a German pharmaceuticals company, is hoping to get approval for a contrast agent whose bubbles, under a correctly tuned ultrasonic beam, will oscillate and eventually rupture.

ECONOMIST: The ne plus ultra of medicine