声波传播时间
双语例句原声例句
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实验结果表明，超声波传播时间误差在7纳秒以内，达到了设计要求。
The result confirmed that the acoustic travel time error was no more than 7 ns and achieved the design objective.
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针对超声波无损压力检测技术，开发了一种采用回振法测量超声波传播时间的装置。
In accordance with the technology of ultrasonic nondestructive pressure measurement, a sing-around device was developed for measuring the propagation time of ultrasonic wave.
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根据螺栓的轴向应力与超声波传播时间变化率的关系，作者研究了一种可直接测量螺栓轴向应力的仪器。
On the basis of relationship between bolt axial stress and rate of change in ultrasonic wave transmission time, the author has developed a device to directly measure axial stress in bolts.
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But because the way sound waves operate, we have these low sound waves taking a very long time to clear.
但鉴于声波的传播方式,低声波要过更长的时间才消失
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